I'm doing a live Q&A surprise. Usually I schedule this thing, but I have a little bit of time, so I figured I'd hop on. So if you're joining the chat, just come on in. I'm kind of paying attention. I just want to share this on my other pages. So peeps know that we're up in here doing this thing. Let me just get my share on. All right, got that going. Here on my other page. It is hard getting all this stuff set up. Let me tell you. Let me tell you. Yeah, okay. All right, I think that's everywhere here. I'll do a little Instagram thing too. By the way, if you're watching this and you're going to follow me on Instagram, you're missing out, all right? Because I got all sorts of cool stuff on Instagram. So let me do a little live thing real quick on Instagram. Yo, what's up everybody? I am live on my Facebook page right now. So come on over. It's the Rewire channel at Facebook. I'm answering all your mental health and addiction recovery questions. So come and join us. All right, let me just add this to my good old story on here. Cool, all right. So, yeah, so anyways, I was gonna do, I'm starting a podcast. I keep saying that, but I haven't yet. I'm starting a podcast and if you're in here, please say hi so I know that you can hear me. But anyways, I'm starting a podcast and my bestie, my BFF, Brosni was gonna come on here, but yeah, she's a little under the weather. So we're probably gonna reschedule that. It's gonna be a really good one too.  And I make my videos as best as I can based on the science and the research and other people's experiences. The friends I have who have been through it and different practices to help overcome it. But it's kind of difficult to, hey, what's up James? But it's hard for me to go over those topics because I am clearly a man and I haven't been through those things. So when my friend Brosni is feeling better, we are going to go ahead and do that live stream. No, it's not gonna be a live stream. It's gonna be a podcast and yeah, when I get that up, I will link it to everybody. It'll be on the YouTube channel too. And if you're not on the YouTube channel, I don't know what you're doing. But anyways, I wanted to hop on because I haven't made a video today and I haven't done one of these live streams in a while. So I wanted to hop on and answer any questions people have about depression, anxiety, addiction recovery, trauma, bipolar, borderline personality disorder. That one is a fun one. Yeah, and I hope y'all people can hear me. But yeah, anyways, so let's talk about some of the stuff that I've been putting up on my channel lately. Let me, I'm over here with my double monitors and stuff like that. And oh wait, I just uploaded a video to my son's channel. By the way, shameless plug for my son's channel. Dillion dad gaming, it's pretty dope. But anyways, a lot of the videos I've been doing lately, I'm trying to put up a lot of videos on my YouTube channel that I've been meaning to do for a long, long, long time. And a lot of them are just like, how to get help for addiction. Like I put up an addiction test. I also talk about opiate withdrawal, which yeah, I've been through cold turkey. It's not fun. But the other thing is too, I'm trying to put up some more meditation things and mindfulness. Has anybody out there watching, has anybody checked out the three tips for social anxiety yet? If you have, go ahead and let me know in here. I wanna know what you all think. Because social anxiety is something that keeps coming up over and over and over again. Whenever I talk about anxiety, people talk about social anxiety. And it's something that I'm very well versed in. The story I often tell people about my social anxiety was, it's kind of hard. Like I need to figure out how to animate this. But when I was working one of my first jobs after I got clean, a couple, three years ago, three or four years ago was my first job after being clean. And like I was so socially anxious and I would go out to walk down this long hallway to go have a cigarette. And at the end of that hallway, you saw this patio, right? And like whenever I saw people on that patio, I would just duck to the side.  Like if I went out on the patio with these people, like, what am I gonna say? What am I gonna talk about? What are they gonna ask me?  So that is how bad my social anxiety used to be.   And time is it seven o'clock? Oh, wow. Yeah, it's well seven o'clock, my time. I figured a bunch of people would have been on here asking their questions, but it looks like people are like coming and going and not really participating, but I'll sit here and I'll talk all day long. I personally got over my own anxiety when I started working at the bar, at the bar. So if those of you who can't see the chat because I'm uploading this to YouTube, I got over my own anxiety when working at the bar. And how was that? I'm gonna keep talking about like, was it because you were interacting with people, like your job made you interact with people on a regular basis? Is that what helped out with that type of social anxiety? Because for me, like, social anxiety was one of the main reasons I started drinking and using. Like, in high school, it was very difficult for me to have these conversations with people. Hey, what's up Tiffany? How you doing? Well, my buddy, did you already leave town? Are you back? Anyways, but like, that's one of the reasons I started like drinking and using was because of my social anxiety. Like, throughout like my whole life, whenever I was having a conversation, especially with girls, like my brain was just going a million miles a minute. Then when you get caught up in your own head, you start to sound even dumber because you start slipping up on your own words and all that.  And that's one of the reasons I kept drinking, kept using. Like, yeah, there you go. Helped you out with conversations. Like for me, when I was having conversations with people at work, like even customers, even clients, like I was in the car service industry for about two years before I got fired and went to another one. But anyways, like it was difficult for me to have a conversation with a customer, especially when I was like, it was a commissioned job. I had to sell repairs for cars. And like, it was difficult. Like, it was difficult because part of my social anxiety was because I was a people pleaser. And like, I know a lot, man, that would be a good video to talk about. A lot of social anxiety comes from just being so worried about the judgments from other people. And like, when I'm telling somebody that their car's broken and it needs A, B, or C repair and they start losing their mind on me, I'll try to keep my mouth clean. Like it made my brain go even faster. And it was brutal. But when I was drunk or high, like I was getting drunk and high at work. Like I just really didn't even care what a customer, client, whoever had to say to me. Like it's terrible to say, but yeah, that was one of my worries about getting clean was how am I going to deal with social situations now that I'm sober? And I talked about it a little bit in my three tips for social anxiety video. Like in that, in my video where I talk about, you know, I was getting invited to coffee. Like for any of you who are in recovery, you probably read between the lines and you know exactly what I'm talking about. Like people after the meeting, they were inviting me out to coffee. And I was like, oh no, I gotta get home and do my laundry or whatever. And but finally I just started saying yes for coffee.  And I just learned how to get comfortable being uncomfortable. So now we got some people up in here. So anybody who's just joining me, like I'm here to answer any of the questions you have about anxiety, depression, mental illness, medications, therapy, meditation, mindfulness. If any of you have questions about that, if any of you have questions about addiction, recovery, what it's like working at a rehab, how to get to rehab, like pretty much anything. I need y'all to start putting some questions up in here because that's what I'm here for. I know everybody has questions. Like when I do this at my job, when I work at the Drug and Alcohol Rehab Center, like I kind of talk crap to them. I'm like, oh, so you know everything there is to know about mental health and recovery and things like that. So I know all of you in here have questions. So somebody break that ice and like let's get this thing rolling. Last time, see my girl Tristan's in here. That's my boo. That's one of the reasons I'm on here. She's in California, in California right now. But yeah, last time she got this thing going. But anyways, like I know that, see, okay, so let's talk about this since nobody's asking questions yet. Christmas is coming up and one thing I tried to do on the YouTube channel was trying to do something more Thanksgiving related and all of those videos tanked. Like there was maybe one or two that did decent, but like, so I don't know if I'm gonna do the same thing for Christmas, I might, but I might not. What's up Jay? And okay, here's one from Tiffany. How do you handle anxiety now that you're sober? So one thing Tiffany, especially now that I'm sober, medications like non-narcotic medications. Can everybody hear that? Non-narcotic medications. After I got clean, I was diagnosed with a generalized anxiety disorder along with like kind of minor depression. But like when I got clean, I started feeling the way I did before I started using alcohol and drugs. And like, I was like, what's going on? And it turns out I had anxiety so they prescribed me a medication called Lexapro. Lexapro is great. I know at the treatment center I work at that we kind of like, we do prescribe it sometimes, sometimes we don't. It works for a lot of people. Some people have weird reactions to it. It makes them like groggy. I've heard it decreases sex drive and things like that. Me, my experience has been fine. It's really helped my head a lot. So medication is one of them. But Tiffany, what I will tell you is I started meditating when my medications were no longer taking care of all of my anxiety. So now it's a combination of medication and meditation. But it took me a while, Tiffany. A lot of my anxiety started going away. To be honest, a lot of my anxiety started going away two, three years sober. I still had it, but it was manageable. Being able to be in front of people every single day doing groups and stuff like that, like it's helped me break through it, but also my meditation practice. Ray says, do you use PTO more for mental health and getting recharged or for vacationing? That's funny, Ray. Honestly, like I don't take PTO that much. Like when I, that's really good that you asked me that. I'm a workaholic and I'm gonna do a video soon about like having a work-life balance. Like I am super duper busy. For example, for example, so yesterday my son was with his mom all day long. My girlfriend just left to go visit her family in Sacramento. So Saturday, like yesterday, most of the day I had just nothing but free time to myself. And I'm like, yeah, free time to myself. And like I was going nuts.  And you know, like Ray, for me, like I think the trick, the ultimate trick is learning how to stay mentally healthy, like regardless. Like I love my job. Like my position at the treatment center, for those of you who don't know, like I pretty much always get to be the good guy. And like I'm very fortunate for that. Like trust me, there's people who don't like what I have to say, but like when like real stuff escalates at the treatment center, like it's really not my problem. So I don't have a very stressful job, but I was reading this book called The Happiness Advantage too. And I think like I need to make more videos about this too when it comes to your job, to your career. And it talks about people who see like their job or their career as just a job. And then when people look at it as a higher purpose. So for example, like I see my job as having a higher purpose because I'm constantly helping people. So like tomorrow's Monday and I'm not even stressed out. When I'm going through my Instagram or I'm going through Facebook and everybody's like, oh no, I got Monday tomorrow and everybody's posting memes and little videos about how stressed they are about going back to work tomorrow. Like Monday to me is literally just another day. You know what I'm saying? So like, I think mental health days for the majority of people is a really good thing. And I think that more employers should be better about letting their employees take mental health days. Like right now I think the vast majority of employers really look down on that. Like a lot of you out there watching this, like just think for a second, like I don't know where you work or who your employer is. But think about it for a second. Like if you went to your boss and said, hey, I need to take a mental health day, right? Like what kind of reaction would you get?  You know what I mean? But like this is a real thing. We live in a time where depression and anxiety are affecting more people than ever before. So it only makes sense that more people need to take mental health days. But yeah, man, the last thing about PTO, like I took a week off to go to visit my mom, take my son and visit my mom and family in California for a week. And like I was staying productive, you know? I don't know.  Cause yeah, like I, being a recovering addict, I really see my time as very, very valuable. And I think everybody needs to see their time as very valuable, as the most valuable asset you could ever have. And like if I just took a day off and I sat around and watched like five movies and played video games all day, like for me personally, I don't know about the rest of you. For me personally, I would be like, man, I just completely wasted a day. You know what I mean? So like I like to be productive.  I don't know. My mental health days are a lot different. Like every day for me is a mental health day. So James, could you see your job as a stepping stone to a dream? You know, that's, wow. Geez, it's getting deep up in here. Like for me personally, I'm guessing you're asking me personally. My job personally, like it is a dream come true. My cat's running around in the background. She is freaking out. Anyways, my job is my dream. Like it's a dream I never even knew I had. I honestly never thought in a million years I'd be working at a drug and alcohol treatment center. And I love it so much. That's why I do stuff like this. Like I work at a, I work at a publicly traded rehab center where you could private pay for it if you got a ton of money or your insurance covers it. And every day, like I try to teach my, I try to teach my clients that like they need to be really grateful. You know, you always get, like nobody wants to, well I don't know, some people want to be in rehab but you get a lot of people coming into rehab. They don't want to be there. They want to be home. They want to, you know, I don't need this and da da da da. And like I try to remind them like there are people out there on the streets right now who would cut off their leg to have the opportunity to come into rehab. So like I started doing my YouTube stuff or Facebook live or whatever. I started doing it because I realized how many people don't have the opportunity. Like for me, it's a dream come true to be in a position where people actually care about their mental health and they want to hear what I have to say about it using things that have worked for me, using things that I learned about science and the medical advances that we're making, like advocacy, like I'm living my dream every day and like that kind of goes back to the last question about, you know, my mental health days. Like every single day I'm doing something like I always joke around about all these people who have these like existential crises and they're like, what's the meaning of life? I don't know what the meaning of life is. And they get all depressed and down like my purpose in life is to help others and give them hope. And with that, as my purpose in life, like every single day is an amazing day for me. Like lately I've been getting people from all over the world messaging me on Instagram. By the way, if you're not following me on Instagram, you need to. But I've had people from Australia. I had somebody from the Dominican Republic.  Like I used to be this hopeless pill snorting alcoholic five and a half years ago. And now I have people actually turning to me for advice to help them better their mental and emotional well-being. So like I'm pretty much already at my dream, which is crazy because five years ago I was almost dead. But yeah, there's always more that I want to do. I want to scale this. I want to reach more people. I want to be able to pop onto a live stream and have thousands of people. But I appreciate every single one of you, you know?  Like you know somebody who struggles with anxiety, depression or addiction. So you see me post a video, share it with other people and say, yo, I know you're going through a hard time. Check this dude out. Like I just want to be able to help as many people as possible. Katie Kelly, my cat's name is Maya. That's my cat's name. And I've had her for, how long have I had her now? Has it been a year? It's been like a year. I don't know, like it's brutal. So yeah, I actually got her from, I have a friend and she does a lot with like pet foster homes and adopting pets and stuff like that. And like, I was just out of nowhere. I was like, I need an animal. I want a cat. So I asked her, this cat is running all over the place. Yeah, her name's Maya. I just went and got her. And yeah, she was like a year old when I got her. So now she's about to, you can see her in the background. Oh, that's fantastic. But yeah, yeah, everybody, if you're just now joining us, I'm answering any questions you have about anxiety, depression, addiction, medications, advocacy stuff. If you have any questions about the stigma. If any of you have been watching my YouTube channel lately and have questions about any of the recent videos I've put up, something that I've been posting a lot about and like I was going to wait until February because it's like Valentine's Day. But some of you have probably noticed I've been posting a lot of videos about relationships. So if any of you have questions about relationship stuff, like feel free to ask me and quit looking at my cat. Oh, there you go, Katie. Awesome. I love it. But like relationships, relationships are the downfall for so many people, just so many people like they were the downfall for me too. And yeah, like I had to spend 18 months single in order to be able to potentially have healthy relationships. Far too many people go from relationship to relationship to relationship to relationship. And they wonder why they're never getting better. And it's because they've never taken the time to step back, heal themselves, figure out what this pattern is, and then move forward and get into healthy relationships. Oh, Louisa, you just jumped in. You missed it. Yeah, I take an anti-anxiety slash anti-depression medication called Lexapro. There was a few years back, two or three years back. Actually, you know what? Now that I remember it, two or three years back, right before I started meditating, I was having a lot of mood swings. I'm talking up, way down. It was almost like, I don't even know how to explain it. But anyways, I'm on a lot of the same medications my mom is, and my mom was on a mood stabilizer. And she told me to ask my doctor about the mood stabilizer. Now, Lexapro is something that your primary care doctor can often prescribe. But the mood stabilizer, I would have had to go to see a psychiatrist. And this is going to sound terrible, and please don't do what I did. Well, I don't know, because it had a good result. But I would have had to see a psychiatrist. And that was a lot of work. I had to set up an appointment, all this other stuff. And then there's insurance, and co-pays, and blah, blah, blah, blah, blah. And that's kind of what's up, Haley? That's kind of what led me to meditation.  I needed to do something. And that's when I really got into meditation. So if you need another reason to meditate, like, I was going to get on a mood stabilizer. I didn't have to, because I started meditating. So yeah, the only mental health medication I'm on right now is Lexapro. The generic name of it is esatallopram. But yeah. And by the way, too, a topic that I'm really trying to learn more about is bipolar disorder. That's something that a lot of people struggle with. And there's this movie. There's this movie out. And it's called something with fire. Gosh, I forgot. Yeah, it's something with fire, but it's all about a couple.  But yeah, I want to learn a little bit more about bipolar disorder, because that's one mental illness that I'm not as well versed in as I would like to be. So yeah. And I know a few people who manage their bipolar disorder. What's up, Josh? And I'm trying to get one of them to be on my podcast. One of them is actually local. But that's the other thing, too. I've been reaching out to a lot of people on Instagram and making a lot of connections and friends and stuff. So my podcast is going to get rolling. But yeah, everybody, if you're just now joining, I'm answering mental health addiction recovery questions, medication, meditation, rehab stuff. I was diagnosed with bipolar, too. See, and that's the thing I don't even realize either. There's stages of bipolar and stuff like that. Yeah. Oh, yeah, cool, Stacey. Yeah, definitely shoot me a private message. And yeah, we can talk about it. And maybe I'll have you as a guest on my podcast once I get it rolling. By the way, can we take a second to acknowledge again how great the quality is on this microphone? Yeah, I'm really happy about it. I just recorded a video with my son and he got to use the microphone. And it was fantastic. But yeah, anyways, yeah, it's crazy, too. Going back to the whole relationship thing. I deal with a lot of people who were in a position that I was where they split up with their child's mother or their child's father, and then that whole deal. I'm trying to write a short book on that, but I've been so, so, so, so, so busy. I haven't had a chance to. I was gonna do it for the month of November, the National Writing Month, and I got busy. And it's not an excuse, because I did a whole video about it and how I was gonna stay accountable. And I kind of blew that one. But yeah, it often amazes me how great the relationship between my son's mom and I, how great that relationship is. So yeah, if any of you have not only mental health questions, but relationship questions, and I know some of those get personal, so I don't know if you wanna ask them in a Facebook live stream. But if you do go for it, even if it's like I have a friend who struggles with this. Okay, you know what? Since none of you are asking me questions, let's talk about this subject real quick. So yeah, I know James, I need to start. Yeah, he was saying books take forever. I need to set a schedule and just write like a thousand words a day. That's what I was gonna do. Yeah, but so let's talk about breakups real quick. Something that keeps coming up today. If any of you follow me on Instagram, like I just posted a picture today, and it just said, stop judging your emotions, right? And so many times, like when people go through breakups, like I don't get it, like I get it because I used to do it too after a breakup, but I don't get it cause it seems it just, like looking back at it now, it's like, why do we judge ourselves? Like when people go through a breakup, they're like, I don't wanna be sad anymore. I shouldn't be sad and I shouldn't be this. And you know, we're affected by this breakup. Like you had love, you had feelings, you made plans for the future and all these other things. And then people go through a breakup and they don't wanna feel that way anymore, or they think they shouldn't feel this way, or they should feel a certain way. And like it's something that I need to really dive into the neuroscience of in a video, but like feelings are meant to be felt, okay? Like if any of you are watching this right now, like I don't care if this retains to you when it comes to relationships, but just please heed my words. Feelings are meant to be felt, okay? When we don't feel our emotions, when we don't let them just run their course, they sit underneath the system, underneath the skin, underneath that surface and they get worse and worse and worse and what they do is they bury themselves into our subconscious and we start to experience symptoms of anxiety and depression. A lot of us have anger issues and we snap at people because we're not just sitting back and acknowledging these emotions. Like if I could just teach people to just have a little bit of faith in this thing, it's just we're so afraid of emotions. And like it's crazy what meditation and mindfulness has done for me. Like we're so afraid of emotions and like now that I look at it, like it just seems like such a silly, such a silly concept like when we, like they're just feelings. They're just feelings. Like nobody's like punching us in the face or stabbing us. Like I know it can feel like that, but what meditation does is it helps us separate ourselves. Okay, so I'm reading this new book. It's a great book. I don't know if any of you like to read or if you're interested, but this book I'm reading is called Why Buddhism Is Real. I was looking for books on Buddhist philosophy, but anyways, there's a quote in there or there's a story in there from this great meditation teacher, the author of the book. He was working with this great meditation teacher. The guy's name is Jack Cornfield. And he says, as you're meditating, right? And as these thoughts are coming through your head. Okay, so just think about this for a second. As these thoughts are coming to you through your head, just imagine, imagine for a second, that you're sitting next to somebody else and these are actually that person's thoughts. How would you associate with them, right? Like you would just sit there and you would watch it. It talks about how meditation, it's watching your thoughts like it's like when you're watching a movie. And I love this analogy too, because think about like a great movie that you've seen, right? Like I'm about to go see Star Wars this week and I'm about to have all the feels, just all the feels. I love me some Star Wars. But anyways, when you watch a movie, movies can, a good movie can invoke emotions, right? They can make you happy. They can make you sad. They can make you fall in love. They can make you angry, right? All these things. And like when you're really into that movie, all of these emotions are coming, but what happens?  That's all it is. And the trick is the way we manage our emotions and even our symptoms of mental illness is that we start to watch our thoughts and our feelings almost like there's something on that movie screen in front of us. And that is just like a truly great place to be when we're able to just watch these things come and go. See, the problem isn't with thinking. The problem is with getting attached to these thoughts, right? So let's go back to like the breakup scenario. Ooh, and James, that's a good topic. Let me touch on that in a second. Let's go back to the breakup scenario. Okay, so let's say you break up and now you think about your ex, right? Now you think about is your ex dating somebody? Then you wonder who it is. Then you start going through the roller-decks in your head of who you think your ex might be dating, right?    He's nothing like me.  But imagine meditating, watching the thought of your ex come through your head, and then you just let it pass by. Now you didn't go create that crazy narrative. So James, so for those of you who can't see the chat right now, James says I usually broke up with someone because I felt like I wasn't good enough for them in the long run. That's a big one. And so this is a process when it comes to self-love and things like that. For people like me, it's how to forgive yourself. That's part of it. I had somebody coming at me the other day about one of my videos and they were saying how the topic I was talking about is a lot more complex. It's not that easy. And it's like, I know, I am. I'm not saying it is. And a lot of my videos need to be like, I hope people watch a lot of my videos because they tie into each other, right? Each one of my videos, because of people's attention span, I'm trying to give little tidbits of knowledge and then you start taking these things and putting them together. I guess now that I'm saying it out loud, that's one of the reasons I need to make more courses to kind of put all this stuff together. But anyways, self-sabotage, right? Self-sabotage or this feeling of not being good enough, I was that way too. So they often say that you dated yourself esteem level, right?  Did that a million times. Or my brain said that I would. Or I start dating somebody and then I see them excelling in life while I'm what I think is staying the same, right? And that's when we start self-sabotaging. And it gets to a point where it doesn't matter what the other person says to us. That is why self-healing is so important because we begin to realize that no matter how much love, right? No matter how much love the other person gives us, we never truly believe it, right? So they can say, no, you're fine just the way you are. You're fine just the way you are and we don't fully believe it. And that's why it took me a long time of just working on myself. So now I believe that I'm good enough for the other person.  You know, a lot of people have self-esteem issues, self-worth issues, all these things. Now, one of the ways that I heal myself, one of the ways that I ensure that I'm good enough for friends, for girlfriend, for my girlfriend, for like almost a girlfriend's like, I only got one, I promise.  To ensure that I'm good enough, I do good things. Like I just do good things. And like that is like the best way to start forgiving yourself or to start having more self-esteem, self-worth, is to just start doing good things. Like do one thing a day to help somebody else out. One thing a day. Like I made a video a few weeks ago about the real gratitude challenge. Like one thing that I hated about the holidays is like everybody's all nice and around like Christmas and Thanksgiving and all this other stuff. Like no, no, no, no. Do that every day. Do that 365, 24 seven. What can you do for your fellow human beings? And every time you do that, it starts getting ingrained in your brain where you immediately do the right thing. And when you're constantly just doing the right thing and helping out like other people, just complete strangers, you start to start loving yourself a little bit more because you start to realize like, wow, I'm not that bad of a person, you know? One way that makes it even easier for me is I'm held accountable by my son. I want my son to grow up and be a certain type of person, right? And in order for him to be that certain type of person, I do good things in front of him and I explained to him why I did it. But he also knows that I do the right thing when nobody's looking. That's a big one too. Like I don't just do a nice thing in front of my son and then like when he's not around, I'm like, aha, now I'm not, I just do it. And I explained to him my thought process behind it as well. I'm sorry, I was, you might have just heard some playback from, or maybe you didn't because this mic is really good. I was just trying to load the chat real quick to make sure I was seeing them. So like, I hope if any of you are watching, I hope that helped like, just do nice things. Like I'm not saying like, go run out.  You know, I'm not saying like every day you got to go like travel around and like feeding homeless people and stuff. It's like, if you just have the opportunity to do something nice, do it. That'll help you forgive yourself. That'll help you start thinking that you're good enough for other people.  Like when you just start doing the right thing on a regular basis and then when you start comparing yourself to other people and you're like, wow, I do a lot of really nice stuff. Like I am a decent human being.   It's interesting too, because I was just talking to a friend about just YouTube and numbers and stuff like that. And it's not like I'm obsessed with my YouTube numbers. I was when I first started, which was crazy. But it's just a way to evaluate myself. It's like, am I doing something good? Am I doing something bad? How do I grow? Because I'm always trying to grow no matter what I'm doing. And it's the same thing just in life. Like I have to compare myself to other people to see, am I getting better? You know, I have to compare myself to where I used to be a year ago. I always tell people this, like I just wake up with one mission every single morning, every single morning. I wake up with one mission. And that is to be just a little bit better. Can you see how small that is? I wake up every single day with just one mission to be a little bit better than I was the day before. And that's worked out great for me. So now like, you know, my girlfriend, she's amazing. She's fantastic. And like, I'm a pretty good dude and she's pretty amazing too. And I don't have to worry about all that judgmental talk to myself and all that stuff. And you know, then sabotage my relationship, thinking I'm not good enough and all that. So how long has this been? Ooh, it's been off for 40 minutes. So, have you ever read into what happened? Another question, have you ever read into what happened to bipolar patients who have had lobotomy? It was a scientific study about 30 to 35 years ago. And I did hear the playback. It's a, huh, oh, and it's a great mic. I thought that was tying with the bipolar thing. No, James, I have not.  I'm glad. Ooh, if we didn't get out of that, they probably would have lobotomized me. But anyways, everybody, you're all beautiful. Thanks for anybody who's been sticking around for this whole time. I'm gonna go, I'm starving. I might go play some video games with my son. But yeah, if any of you ever have any questions or anything like that, make sure that you follow me on Instagram. You can DM me there. DMing me on Instagram is a lot better than trying to reach me through the Facebook page because the notifications for the Facebook, like really suck. So go ahead and follow me on Instagram and shoot me a DM there. Or Twitter, it's the same thing. If any of you use Twitter, you can follow me there. So if any of you have questions or there's something that you wanna talk about privately or if there's a topic that you want me to go over in a future video, feel free to let me know. Because yeah, I love doing anything where I can help all of you. I love when you guys give me topics like the social anxiety one I just did. That was based on something a client's been asking me a lot about. So when you tell me what kind of mental health stuff you want me to talk about, gives me something to work with. And that way I know I'm just not making the videos that I wanna make, I'm making stuff for each and every one of your beautiful faces. But if you haven't yet, head over to the rewired soul on YouTube, hit that subscribe button. And again, right down here, follow me on Instagram. All right, everybody, love your faces. I'll see you later.


Hello everybody! A lot of people are asking me what is this event, what is this webinar that will be hosted on the 25th of November at 2pm EST. So actually I want to tell you only a few things about the webinar and why you really really really should register to this webinar right now. So the first thing is that I know that a lot of people are struggling with Amazon and this one we decided to create this webinar. We want to show you other alternatives that actually will help you to skyrocket your business right now. Now it's the holidays time. Now it's the time to skyrocket your dropshipping business and actually to make profits. I don't want you to struggle with Amazon anymore. Now it's the time to switch to another suppliers. Now it's the time to make huge profits and that's not all. In the webinar, during the webinar, I will also show you how you can actually find a lot of profitable products for all of these different suppliers and another last thing. A lot of people are asking me how now I will move from 10, 20, 100,000 products with Amazon to another suppliers. So during the webinar I will show you exactly how to do it, how easy it is, how it's so easy to find actually profitable products from other suppliers and just move in one day. It's really super easy and I will show you all of these things during the webinar. Again, I really recommend it to come. We will have a Q&A section in the end of the webinar where you can actually ask me anything and you will learn a lot. We already created two partnerships just for this webinar, one with China Brands, one with Costway. It will be really amazing. I'm super excited about this event. See you there, 25th of November at 2 p.m. EST. Bye-bye.


Good evening everyone those who are online please type in your names and if you can see a question start solving it. So these are the passage based questions I have taken so these passage based questions they come in J advance they don't appear in names so on a single passage there can be like two or three questions so these three two three questions will be based on one passage only so understanding of passage becomes very important okay so it is okay to spend you know at least two to three minutes on just understanding of passage because it is seen that if you understand the passage and if you answer one question correctly the other two questions related to passage will be solved very very quickly okay so like that good evening you can see a question in front of you there are two more questions based on the same passage so today we are taking up questions on budget body motion and they are passage based questions who else is online type in your names understood the question understood now tell me which concept will be you will you be using here what concept will be used before you even start solving can I use conjunction of angular momentum but there will be friction between the disc right there will be friction between two discs what about that welcome everyone what about that friction between the two discs that will create a torque right then how can you use conjunction of angular momentum there is a torque right so conjunction of angular momentum can be used only when there is no torque yes or no anyone correct so like what Bharat said there will be frictional torque if you consider only one disc fine but if you consider both the discs together these of tors will be equal and opposite so they become internal tors and they'll cancel out each other net external torque is zero if you consider both the disc together so you can conserve the angular momentum by having both discs together as a system okay you cannot conserve angular momentum of a single disc okay now solve this question quickly what is the answer what directions they are rotating that's a very good question all right it is not given and it's not very clear in the diagram also but there is an assumption that both are having direction same direction okay if both are having opposite direction then situation will be different okay so if you conserve angular momentum initial angular momentum about center of mass is i a omega a plus i b omega b fine so if angular velocities are in opposite direction then minus sign will come over here but i'm assuming they are in the same direction okay now if they are moving together they will share the same axle when they start moving together fine like this so their moment of inertia can be added because the axis of rotation remains the same so you can add moment of inertia like this so that's why omega comes out to be this option three any doubt this will be the answer fine yes now what is seen is that in the previous year like this year 2019 j many simple questions came but the problem was that their calculation or intensity you can probably discuss with those who have written j in january okay they will tell you that so that's why the calculation part becomes very important so don't just think that okay fine you know the concept so you can just you know leave it and then you can move it to the new concept so it's not only about concepts fine it is about how good you are in calculation as well so that's what the next question is about find out the passage is same okay there's a disturbance now there is now there is no disturbance right again i get my phone near the mic so disturbance is still there okay solve this you just have to substitute the values given in the passage let's see how quickly you get the answer and how accurately it is poor thing you can scroll the youtube video back you'll be able to see that you can just scroll your video back it is getting recorded so you can scroll it back okay you can scroll it back you'll be able to see it it's a youtube video right i'm sure your experts are watching youtube videos don't use calculators 100 astuto used calculator or astuto is a genius one of these two options don't tell me as it was you got 1 divided by 0.01 that is also 100 okay that's fine all right so 100 is the correct answer you can just check at your end what about this find out the final kinetic energy so here the used calculator 300 see you got omega right you got the final omega never ever used calculator okay that's very interesting i a plus i b into omega square omega you already got 100 fine you know i a and i b so answer is one okay we'll go to the next question we'll go to the next question okay there's one you made a comment and then could you retract it now disturbance is gone still there bar this thing third anyone else one more minute the acceleration of center of mass is net external force divided by total mass of the system that's the hint spring force is it external or internal to the both the blocks spring force is internal force right the total external force horizontally is f only okay and mass is 2 m so acceleration is f divided by 2 m fine and this acceleration is constant isn't it so if accession is constant i can use this formula s is equal to ut plus half at square initial velocity of center of mass is 0 so displacement is simply half into a into t square that is option number three okay fine let us move to the next question now i hope you are clear in case of any doubt quickly type in this one second block okay ashutosh will describe how we're solved what is x yes yes purvik ashutosh keep the book aside focus here okay what is going on okay let us try to solve this question this is y coordinate and this is x coordinate fine now here i am must be more than see wait let let me explain and then you'll understand clearly okay rather than taking my origin here let me take the origin at the center of mass itself okay so let's say my x center of mass is at the origin fine so let's say x equal to 0 represents origin fine so let's say after time t after time t the x coordinate of this first block let's say first block x coordinate is x1 okay and the second block x coordinate is x2 fine so the x coordinate of center of mass will become what x coordinate of center of mass will be mx1 okay plus again both masses are same so mx2 divided by m plus m fine so this is what x1 plus x2 by 2 all right so this is the x coordinate of center of mass isn't it and this has to be equal to the previous thing which you have solved for the previous question which was half at square right so half f divided by 2m into t square okay so this is your first equation okay and what else is given is that extension in the spring is x0 so both the blocks move right let's say this moves this way and that one moves that way fine so x1 the x coordinate of this block m minus x coordinate of that block x2 this i'm saying that this is the extension in the spring okay i'm ignoring the length of the spring initially all right so you have these two equations so when you solve these you'll get option 1 to be correct any doubts yeah of course you can imagine small m will move more than what center of mass will move any doubts any doubts here could be by symmetry kaika symmetry they go use this equation you'll get option 3 for the second block okay don't force yourself to identify you know although you may get the answer at times but you know rely more on equations than symmetry okay next question was in fact that only so yes option three for this one okay fine let's move ahead not this this one option four this one yeah option four is correct for this one it's all this question why we consider x1 minus x2 not x2 minus x1 because the block which is ahead is moving more than the behind one right x coordinate of the ahead one will be more than the behind okay this is a very simple question if you break this problem into multiple parts so good thing is that if you know this problem the first question will take time but the other two if you know if you solve this one other two will be solved quickly because same on the same equations other two questions will also be based upon anyone got the answer none of these niranjan got none of these no no hurry guys just take one by one and you'll be able to solve it draw the free body diagram there's constraint relation i got a very weird answer this itself is weird mass of the plank mass of the plank is 1 kg isn't it given both plank and small m is plank at the top it is written 1 kg even the cylinder is 1 kg you can get the try getting the expression first okay don't worry about the final answer get the expression in terms of capital M small m f and theta and then substitute no one should i solve or you guys are in between 1s what is 1s oh one second one second done plank be lifted from the force force is how much 55 newtons hmm i can understand so okay what you're saying plank so plank can be lifted up but let us say i mean hypothetically solve this in terms of capital M capital M small m and f and theta okay in terms of that solve this okay but yes the plank will get lifted off so this question doesn't make the complete sense but in still can you find the expression in terms of the variables but the answer is you know if i keep on saying you're getting getting wrong so you have only four options right so now even that is wrong none of these i always said it is wrong so only often two remains should i solve a good thing about taking online class another good thing in fact is can draw the diagram very nicely anyways so let us take cylinder and the plank one by one okay so here is the plank now on the plank what are forces are there you have f cos theta that's what barat you have to improve your handwriting so this is f sin theta yellow color then there is mg small mg and on top there will be let's say normal direction n1 find any other force of course there will be frictional forces so this is let us say f1 okay this is f1 okay and then there will be pairs of the forces first pair is normal direction so this is n1 okay and then this is another pair f1 okay this is the center okay and then we have capital mg force like this of cylinders and one normal direction from the floor let's say that is n2 okay and of course there will be a friction from the bottom so let's say that is f2 okay any other force can think of anything you think it is left or this is fine friction is not mentioned and if you if if you say that okay it is given rough on the plane but is not mentioned friction between the plank and the cylinder then the plank can never apply the the initial torque on the cylinder and cylinder will never be able to roll plank will just slide away from the cylinder okay there has to be friction between the plank and the cylinder as well okay fine so now let's mark the accelerations also here so let's say that acceleration of the cylinder is a center of mass okay and angular acceleration of this cylinder is let's say alpha okay similarly planks acceleration let's say over here I'm taking it as a1 fine okay so now let's write the equations for plank okay for plank we have f cos theta minus f1 is equal to m into a1 right and n1 minus mg is equal to 0 this is for the plank okay plank doesn't roll so no no question of writing the torque equation for that okay now for the cylinder for the cylinder we have f1 plus f2 okay wait here it will be there will be f sin theta as well right this is f sin theta is equal to 0 now for the cylinder f1 plus f2 is equal to capital M into acm okay what else what else I can write I can write n1 plus capital mg minus n2 is equal to 0 and I can write the torque equation also okay torque will do i alpha I can write about center of mass so f1 talked into f1 is in the direction of alpha so f1's torque is positive so r into f1 minus r into f2 should be equal to cylinders moment of inertia about the center of mass so mr square by 2 into alpha okay fine now you'll see that if you just look at the equations you have useful equations are this this and that because normalization anyway you don't need to calculate so using these three equations I need to solve for the expression of cylinder which is acm now count the variables capital f f1 f2 okay 3 and then acm and alpha okay so you have five variables and just three equations all right sign part of just like force in the direction of acceleration is constant is positive similarly usually we assume that the torque in the direction of angular acceleration is positive so torque due to f1 is in the direction of angular acceleration alpha so f1 is trying to rotate the cylinder in this way same way as alpha is rotating okay but f2 is trying to rotate in opposite direction so torque due to f1 is positive but due to f2 it is negative okay so hence negative sign over here all right now I have to write the constraint relations constraint equation of constraint relation let's say this is point one and this is point two okay since it is pure rolling happening so point one and point two relative acceleration has to be zero fine so at point number one the total acceleration is acm minus alpha into r so this should be equal to zero this should be equal to grounds acceleration so that is why this is at point one at one okay now look at point number two point number two is acceleration on the cylinder is acm plus alpha r so this is acm plus alpha into r okay this should be equal to acceleration of the plank which is a1 fine so this is at point number two fine so like this you have to write down these equations and then you'll be able to solve it now please solve it and get the answer quickly all of you understood where you guys were making mistakes quickly solve get the answer that's wrong Bharat anybody else nirangin that's why that's probably because you're attending both the sessions chemistry as well as physics okay so option two is correct all right let's move to the next question now see the next question is to find the frictional force at a so once you solve those equations you get all three questions correct so now if this is frictional force at b right is it sorry Bharat okay so these kind of questions don't think that for just one question you are spending a lot of time because you solve the first question you automatically get the other ones easily this one what about the previous question there was a previous question which one no no solve this question option three what else anybody else it's an application of parallel axis theorem should I solve or should I wait there are n rods okay so I need to basically find out moment of inertia of all the rods about the center over here okay and then I'll add moment of inertia of the ring which is there for the ring it is easy okay because rings moment of inertia is simply mr square so you can see in all the options there is one mr square is added that is of the ring so the problem is tricky because of the polygon that all right and another good thing is that you just have to find out moment of inertia because of the one link of the polygon and then multiply that with number of links because all the links are placed symmetrically about this axis okay so all I have to do is to find out moment of inertia due to this one link and multiply that with n okay now there are n rods of mass and each okay so the total number of links are n so if I if I have to find out this angle this angle will be how much 2 pi by n okay 2 pi is the total angle divided by n sides so this will be that angle okay but if I drop a perpendicular over here why I'm dropping perpendicular because I'll be using perpendicular sorry parallel so I'll be translating this moment of inertia from here to this point so it will help me okay this angle is pi by n okay it is half of 2 pi by n that is pi by n okay now what else is given length of the rod is not given well metal ring of radius r so what is given is this radius is given because when the ring will be welded it will be welded at the corners and center will be this only so this distance from here point number one to point number two this distance is r that is given fine so let's say that distance is small d okay so small d is given as r cos of pi by n okay now moment of inertia I have to find out for one of the links I'll be using i is equal to i center of mass plus small m into d square okay now i center of mass is ml square by 12 okay now mass is small m but l is not given okay but in this right angle triangle this length you can see that this length is r sin of pi by n okay so total length is two times of that okay so icm becomes m into l square which is two r sin pi by n whole square ml square by 12 okay plus m into d square uh that is small m into d square that is r square cos square pi by n okay so this you can see that you can further simplify it and it will become m uh mr square if you take that common you'll get it as sin square pi by n by three plus cos square pi by n okay now there are how many links n links are there so just multiply this total moment of inertia will be n times of that okay so not only just this plus the rings moment of inertia which is mr square the ring is also valid that's why option one is correct any doubt no doubts this one how will i solve this one i whatever i have got in the previous question that was uh icm of the entire system isn't it okay so i need to find out basically moment of inertia about one of the corners so simply i'll be using i is equal to i center of mass plus total mass of the system into d square so now i'm applying this for the entire system okay icm we have already found out plus total mass of the system is capital m plus n times small m into distance is actually r square isn't it the corners distance from the center is radius so option two is correct fine let us move to the next question now this one option four nirajan hanugar now it is should i solve this one or should i wait okay let us solve this one now so i'll take the components this is mg sin theta mg cos theta this is friction okay this is acm okay and it is rolling so i need to show alpha as well so this is alpha fine so net force equal to mass m expression so i can write mg sin theta minus friction this is equal to m into acm okay of course there will be a normal reaction also so fine and n minus mg cos theta will be equal to zero fine so these are the force equations and then there will be a torque equation only friction is creating torque about center of mass so r into fr is equal to i into alpha okay and then there's pure rolling so at this point alpha r minus acm this is a net acceleration this should be equal to zero okay fine so just need to solve this one and for limiting case once you get the friction okay friction should be you know less than or equal to mu times normal reaction okay now to find the minimum value of coefficient of friction you just substitute the value of friction to be equal to mu times n okay so once you get the friction from these equations substitute the friction value as mu times n and you get the value of mu where n is mg cos theta okay which option you're getting now option 4 this is what you're getting solve this so Kirti is answering for discussion of the previous one if nothing is said then you have to assume sphere is solid remember this if it is not mentioned you have to assume it is solid sphere anybody else see don't get worried by looking at the size of the question or some weird diagram it's ultimately a simple question any question that asks you to find the moment of inertia you I mean it can't be very difficult okay the ring is mass less so only moment of inertia is because of the sphere only okay so all the spheres have mass m and radius r so they are symmetrically plays about the center of the ring so just have to find moment of inertia you know because of one of the sphere and then just translate it okay so numerator should be a multiple of four okay and the denominator should be multiple of five and and sadly all four options satisfy that we need to solve it further so moment of inertia of the sphere is 2 by 5 m r square okay but we don't know this distance okay this distance is what we need to translate the center of the you know sphere to the center of the ring so this distance is 2r isn't it this one is 2r okay this distance is equal to that distance all right so using Pythagoras theorem let's say this is d so this also has to be d so you have 2r whole square is equal to d square plus d square is equal to 2d square fine so d will come out to be equal to root 2 times r okay so for one of the sphere it will be 2 by 5 m r square plus how much I have to translate a distance of d so m into d square so that is 2r square total moment of inertia will be this multiplied by four because there are four such spheres okay so this will be how much 10 12 48 so 48 by 15 sorry 48 by 5 48 by 5 m r square so that's our option four clear right we will move to the next question now this one all of you attempt option two this thing is in equilibrium look at this diagram let's say this is t okay so this thing is in equilibrium so this is also t you have capital MG so t minus MG is equal to 0 okay and okay and this this thing this structure is not rolling as well because everything is in equilibrium so the torque due to the force okay so f into the radius not the radius of the sphere this distance I am talking about this one okay let's take it as d only then it will be better this is d so f into d all right minus t into 2d this distance is 2d this is equal to 0 so I have equated torque to be 0 about this point because this is not rolling so I can use torque is equal to i alpha about any point so alpha is 0 so net torque about any of the points has to be 0 so this is a convenient point for me because friction will not come in the equation unnecessarily friction will come out otherwise now substitute the value of t over here so you'll get f into d minus MG into 2d is equal to 0 okay so the value of force will come out to be two times of MG so like this you have to solve this question so option 2 is correct over here this one this one option 4 is what Purvik is saying others yes yes Bharat omega is as indicated in the diagram option 4 is not correct see look at the direction of omega and velocity anybody else right now tell me what is the velocity of the bottom most point at this moment when omega is the angular velocity and v is the linear velocity of the center of mass what is the velocity of point of contact is it is it 0 how much it is it is vcm minus omega r or vcm plus omega r how much it is they look at the sense of rotation with respect to this point this point is moving in a circle and going like this isn't it this point with respect to center of mass is going with the velocity of r into omega this way okay so total velocity will be r omega plus velocity center of mass both are in the same direction okay you can imagine also suppose it is rolling without sliding then the sense of rotation has to be like this but it is in opposite direction of the rotation okay so the point of contact is definitely not at rest and it is not a pure rolling okay because a point of contact has the velocity of zero so hence what will happen the process is like this the process is that the angular velocity will decrease okay and linear velocity will increase fine what will happen is that omega will go from omega not to zero and then it will increase in opposite direction from zero to whatever is a requisite value all right now tell me during this process what kind of friction will be applied is it static friction kinetic friction it's a kinetic friction so all the while it was sliding fine and hence the friction will be constant and its value would be mu time mu times normal reaction okay so now let's see the other things as in the equations of motion so which direction the friction will be applied right now see this point is sliding that way so friction will be of course applied this way in opposite direction this is a force of friction which is mu time normal reaction with normalization happens to be mg you can see the force balance mg is down and normal reaction is up okay and there is no other force acting on this object fine so mu mg will be equal to mass time acceleration of center of mass so acceleration of center of mass will be equal to mu times g this is your first equation and the torque mu mg times r this is the torque this will be equal to mr square by 2 which is moment of inertia into alpha okay so alpha will come out to be 2 mu g by r any doubts so this process omega not to zero how much time it will take i'll be using omega is equal to omega not minus alpha into t and put omega to be zero this is equal to omega not minus 2 mu g by r into t okay so let's say this is t 1 t 1 so t 1 comes out to be omega not r divided by 2 mu g okay this is a time taken for angular velocity to become zero okay now it could happen in other way round also like velocity could become zero and then velocity increases in opposite direction fine so let's see whether velocity becomes zero first or angular velocity becomes zero first so if i use v is equal to v not minus at okay so v is zero and initial velocity is omega not r by 4 minus a is what a is mu g okay this into t dash so t dash comes out to be omega not r divided by 4 mu g okay so rather than omega becoming zero and then rising from zero to the required value of omega for which pure rolling starts what will happen is the velocity will become zero and then increase in the opposite direction okay because velocity is becoming zero first getting my point no doubts right which part see understand first thing that angular velocity is in this direction and velocity is in forward direction okay so one one thing has to change its direction okay either the velocity has to change its direction or angular velocity has to change its direction then only pure rolling can start okay now the whichever becomes zero first will be able to change its direction first okay now you can see that i mean the change in direction will only happen when it becomes zero first right it will become zero and then reverses direction so you can see that angular velocity becomes zero at later time than velocity becoming zero okay so velocity will become zero and then it will change its direction first so angular velocity will not change its direction but at least one of angular velocity or linear velocity has to change the direction for pure rolling to start this you understand okay now let's see that okay let us say that the velocity is changing its direction now so velocity will increase from zero getting it so now velocity will be equal to v is equal to u plus at accelerate the frictional will friction will increase the linear velocity initial velocity is zero it is changing its direction and now it is in the direction of friction so plus acceleration which is mu g into t2 let us say okay okay and what about angular velocity can you find the angular velocity omega will be equal to omega 1 minus alpha into t2 t2 will be same for both of these but omega 1 is not zero omega 1 is omega after this time okay after when the velocity becomes zero then you are applying these equations okay finds omega 1 how will you find omega 1 omega 1 is omega not minus alpha is 2 mu g by r into t t dash which is omega not r divided by 4 mu g okay so this comes out to be omega not by 2 omega 1 is omega not by 2 okay so this is omega not by 2 minus alpha is 2 mu g by r into t2 fine this is omega okay and this is v so if pure rolling starts after t2 then omega into r must be equal to v fine so just use this you will get the value of t2 and total time will be t1 plus t2 any doubts quickly let me know option 2 is correct no doubts right let's move to the next question this one how did you get this super its option 3 now will the angular momentum be conserved will the angular momentum be conserved about any axis you take that passage through this line will it be conserved yes or no okay so initial angular momentum will remain equal to the final angular momentum in that case okay so can you find out the initial angular momentum how much it is you remember the formula right m into vcm into perpendicular distance plus icm into omega this is the angular momentum okay but then you need to take care of the sign probably this is of opposite sign of this then it there could be plus or minus just check whether you are getting like this also the same answer 3 actually in this case m vcm into d about this point the angular momentum is like this okay and icm omega is in opposite direction so there will be minus sign in this case okay no no this is the formula okay the actual formula is this r cross m vcm plus icm into omega this is the formula this is the formula for angular momentum about a point from which the center of mass is position vector is r okay so you can see that you'll get the same answer m into vcm is v0 that is omega 0 r by 4 into d d is what r minus icm it's a disc so mr square by 2 into omega fine so basically you'll get you're getting minus of mr square omega 0 by 4 now plus or minus is just for our reference okay we have assumed something to be plus or something to be minus so if you just talk about the magnitude often 3 will be the correct one why you need break Bharat okay we'll be having a break at 630 don't worry this one okay what is the answer over here the answer is 3 how will you solve this one is what the rate of work done so dw by dt is power fine so after time t total work done will be p into t and this should be equal to change in kinetic energy fine the change in kinetic energy is proportional to velocity square fine so p into t is proportional to v square or you can say v square is proportional to t power is constant so velocity is proportional to under root t fine let's go to the next one okay let's take a break you know let's take a small break we are right now the time is 625 okay we will meet at 640 okay are you guys there able to hear me solve this question which direction will be the normal reaction between the rod and the floor it will be vertical isn't it and it is smooth so there is no question of friction okay if friction is there then you can't say vertically upward but right now friction is not there so the only force force of impact between the rod and the horizontal this thing is along the normal okay so and that normal is along the common normal so it will be vertically upwards like this okay that's our option number two okay let's move this one okay others why you keep on retracting your message you don't need to be so much self-conscious you have to use the fact that it is an elastic collision okay so coefficient of restitution is one but the problem is it's not that two point objects are colliding one object is extended fine and it will have some angular velocity so it will not only I mean at every point it will have different velocity isn't it so when you try to write coefficient of restitution equals to one which points velocity will you consider on the rod tell me when you write coefficient of restitution is equal to one that is velocity of separation is equal to velocity of approach then which points velocity will you consider because each and every point has different velocities center of mass is that the correct answer we need to consider the velocity of point that underwent collision for coefficient of restitution formula okay point of impact so a is velocity but another issue is with a is velocity is that okay is that you can find the component of a is velocity in various directions so which direction I should consider which direction of a is velocity which direction I should find the component of a is velocity then I write velocity of separation and velocity of approach Sushant that's not the correct question I should be asking why center of mass okay because here collision when it happens it's a contact okay in a way so when you write velocity of approach who is approaching the point of contact is approaching and that is getting anyways now tell me along which direction along which direction along line of collision Bharati is saying along line of collision is that correct I mean what does this mean what does this even mean line of collision because if I tell you there is this situation suppose one disc is there and suppose there is bigger disc fine so now this disc is coming like this the smaller disc will hit the bigger disc and bigger disc was initially going like that so along which direction you'll consider coefficient of restitution formula when these two disc will hit which direction you might have played the Karen board right when you hit the striker you know not head on then after the collide probably it they'll change their velocity it'll go like this and this will probably go in this direction after hitting so which direction I should write velocity of separation and velocity of approach I should be writing at the common normal fine along the common normal you write velocity of separation and velocity of approach okay so here the common normal luckily happens to be vertical only see point A has no direction normal a point okay points tangent direction and normal direction is undefined so you look at the other surface of contact that is horizontal so for that the normal is defined so when it comes to common normal it has to be normal to both so that's why the vertical direction I'll be considering okay under should write no doubt okay before collision speed is v0 this is the speed of a before collision this should be equal to speed of a going in this direction immediately after collision okay now after the collision the rod also gains angular velocity so let's say it has angular velocity omega okay and velocity of center of mass is v dash okay now tell me which direction the velocity of center of mass will be can I tell something about direction of center of masses velocity v dash do I know this is it vertical does it need to be vertical can it be like us you know inclined from the vertical can it be like this velocity center of mass can it be like this why what is the reason exactly no force in horizontal direction normal reaction is acting on the rod which is vertically upward so it can only change the velocity in the vertical direction if initial velocity is also in vertical direction it will remain vertical okay it can change the direction of velocity to upward but more or less it but it will be remaining in the vertical direction itself okay but if friction would have been there then you can't say that after collision its velocity will be vertical fine so v dash is vertical so let us say after collision also its velocity is downward only and it is v dash fine now because of omega what is the direction of what is the magnitude of velocity of a the magnitude of velocity of a is omega into this distance yes or no this distance is l so omega into l in which direction omega into l along this direction which is perpendicular to the rod okay so this is omega into l all of you able to understand and this angle is theta fine so I can say that v naught is equal to this is velocity of approach now velocity separation is omega l cos theta fine minus v dash I have taken component of omega l in vertical direction okay so this is what I'm getting all right but none of the option satisfies that so I'll relook at my assumption my assumption was that after collision v dash is downwards okay if I flip the assumption and I say that after collision v dash is upwards then the same thing will become plus and then you'll realize option four is correct any doubts cos theta because omega into l the direction of that is perpendicular to rod okay that's that's a relative velocity perpendicular to rod so vertical direction makes angle theta with the perpendicular to rod direction so you have to take component of omega l okay this question the angular loss of the rod before striking is zero fine so about this you know to find the angular momentum so you remember angular momentum formula omega is zero and this thing translates into you know m into v cm multiplied by the perpendicular distance of the point from the line of velocity of center of mass okay so this is the line of velocity of center of mass and this is the point so this is the perpendicular distance this thing is l cos theta that's why it is l cos theta option two the cos theta fine let us move to the next few questions what is this solve this one others okay should I solve now or should I wait solve okay according to the book all your answers are not correct answer is three okay let us see whether it's all right okay so um fine so this is a statement which everybody knows the point of contact plays a crucial okay and that's also a informed disc m and r v not omega not as shown okay so omega not is two v not by r fine and velocity is v not so we need to find the graph of angular velocity of the center of mass sorry angular velocity angular speed of the disc about its center I mean this is not required about its center angular speed will be same about of any point on the rigid body it need not be about a point anyways so you know we need to first understand the graphs okay what is happening in the graph is this here omega has some value it goes to zero and then it suddenly picks up and becomes constant can this ever happen suddenly the velocity picks up suddenly the angular velocity can it pick up until unless there is an angular impulse this can never happen fine and here you can see that and here you can see that there is no angular impulse fine so one is not possible at all all right now uh you know even two you can see that it is you know after becoming angular velocity becoming zero angular velocity is gaining some uh and it is suddenly gaining all right so I would be keeping this also in check all right I would be confused between third and fourth all right but then uh you know this is just a guess right so let us see how we can actually solve this question okay now why this what is the difference in this and this graph tell me anyone when this will happen and when that will happen difference between this and that graph is what yes four picks up reversal of the motion so basically what is happening is that if angular velocity and the linear velocity both become zero together fine then reversal will not happen if both both v and omega goes to zero together okay then reversal will not happen then it will just stop fine so you can see that uh the acceleration due to friction is mu times g over here fine so uh the it will become zero at what time so v is equal to v not minus mu g into t which is zero so t is equal to v not by mu g in this time the linear velocity becomes zero and what about angular velocity first we need to find the torque okay torque is mu mg which is torque sorry which is friction force into r this is what this is uh disk this is a disk so this is equal to mr square by 2 into alpha right so alpha is mu g or 2 mu g by r okay now i can find out the time in which omega becomes zero this is equal to zero and omega not is 2 v not by r minus 2 mu g by r into t this is equal to zero so here also i'm getting t as v not by mu g okay so both linear velocity and angular velocity they are becoming zero at the same time okay so what will happen it will once it comes to rest it will not uh you know i mean it will not it can't start its motion on its own right because of inertia that's a option 3 is correct both angular velocity and linear velocity become zero and hence reversal will not happen are you able to understand what is going on any doubts here that's one same now reversal will happen try solving this one your doubts will be cleared will linear velocity and angular velocity become zero together in this case same angular velocity how much was the angular velocity omega was equal to 2 v not by r so other torque was mu mg into r this is torque and this is equal to i alpha so 2 by 5 m r square into alpha fine so you'll see that m goes away r r so alpha is 5 mu g by 2 r fine so this is alpha okay and a remains equals to mu g so time in which the velocity becomes zero is this v not minus mu g into t so t comes out to be v not divided by mu g okay and time in which angular velocity becomes zero will be like this 2 v not by r minus alpha into t that is 5 mu g by 2 r let's say t1 okay so r r is gone so t1 is 4 v not by 5 mu g okay so you can see that the angular velocity becomes zero first fine so angular velocity will become zero and because the linear velocity is still there the this thing the disc will be you know sliding and because of that slowly and slowly it will reverse its angular velocity in opposite direction okay fine and what will happen is that after some time it will start pure rolling when omega is equal to v by r or v is equal to omega r all right so this is what will happen it will go like this then it will come back to this position where pure rolling starts where angular velocity increases in opposite direction and after that point onwards pure rolling starts so omega is equal to v by r okay fine so that's a option four and why not option three anyone why not option three no assume that is the same omega okay omega final is equal to omega initial then is option three possible if this is happening whatever was the initial angular velocity is the same final as well then it can this happen then also this is not possible okay it will break the conservation of energy if you measure the initial kinetic energy okay so initial kinetic energy if you measure half mvcm square plus half icm omega square omega was 2 v not by r okay fine and finally finally omega should be same according to the graph so omega should be 2 v not by r only and at the same time it is pure rolling as well so omega should also be equal to v not by r so this contradicts okay so omega should be actually half of the earlier omega at you know then only it makes sense fine so like this you don't need to be mathematical all the time you can visualize the scenario and then answer it fine is this the end this one so we have just 10 more minutes we'll solve three or four more questions for today okay symmetry option two right due to symmetry if you take the components horizontal and vertical all the while the horizontal component between p and q this is p by the way this this is p and this one is q so all the while between p and q yeah by net displacement also very good or you can visualize like this that all the while the component of velocity along the horizontal is always this way okay but when you take the vertical component from here to this point it is upward and from there to q it is downward so vertically net displacement is also zero and you can see the velocity also changes direction so net net average velocity along y direction is zero and now x direction is this okay let's go to the next one is it option four only acceleration is centripetal acceleration fine so anywhere it goes it will have acceleration towards the center so you can make out the horizontally their component will get cancelled away but vertically their components will get added that's our option four all right okay so one of those routine easy questions towards the end try solving it accurately and fast four option four punch this is one of those routine questions acceleration of center of the sphere is asked okay now if you are comfortable you can you know don't even involve friction here it is saying that it rolls without sliding okay so if you draw the freeway diagram you will see that this point is at rest so you can use torque equal to i alpha about this point because it is at rest okay so we have mg sin theta over here and we have normal reaction and mg cos theta fine and then of course we have the friction as well fine you can see that all the force passes through this point except mg sin theta fine so you can directly get the torque without even writing for friction so mg sin theta sorry you can directly get the angular acceleration without you know bringing friction in picture if you write torque about this axis all right the mg sin theta into r is it's a sphere right is equal to i about that point into alpha where i about that point is 2 by 5 m r square plus m r square parallel axis theorem okay so like this you can see that this is 7 by 5 m r square this is i so alpha is 5 g by 7 r into sin of theta okay so this is alpha and we know that in a pure rolling a center of masses alpha into r so 5 g by 7 into sin theta is 3 by 5 so 3 g by 7 come here option 4 fine all right let us move to the next question no doubts right if there is any doubt quickly type in option 3 yes it will be 0 all the time it's a pure rolling right it is pure rolling so point of contact will be at rest because the surface on which it is placed that is also at rest relative velocity has to be 0 okay all right so final question for today one more question is there then we are done this one last question happened to be the easiest of all and this is usually the case in exam also so we have this habit of you know solving question paper from question number one and then sequentially going so that's not how you should attempt the objective question paper how much did you get the acceleration of center of mass 3 g by 7 yes or no that's what that was the first question right a center of mass we have already found a center of mass was 3 g by 7 okay and this is h so this distance is how much this distance is h by sine of 37 okay so 5 h by 3 is a displacement so s equals to half 80 square so 3 g by 7 into t square initial velocity is 0 okay so you will get 75 to 35 to 70 by 9 we're getting factor of 70 by 9 so option 2 is correct so I won't even bother to complete the answer because you have to just pick the correct option so this is the answer for this question fine all right guys so that's it for today so we had a session on the comprehension type questions so you might have realized that there is a different way you have to approach these kind of questions and always the first question of the comprehension will take slightly more time than the other slightly get it takes much more time the others so don't get panicked if the first question of reading comprehension takes time because once the first question of comprehension is solved the other questions can be you know done very very quickly because everything is based on single scenario okay all right bye bye