If you rub a coin briskly between your fingers, it will not seem to become charged by friction. Why?
If you rub a coin briskly between your fingers it will not seem to become charged by friction, why?
If force is applied on the topmost point of a ring placed on a frictionless surface, will it roll without slipping? Why is friction? How is friction useful? Is friction a reaction force? Does friction depend on surface area? What causes friction? Why does friction produce heat? Can friction be converted into kinetic energy? Can static friction be less than kinetic friction? Which fundamental force is responsible for friction? Why? Is friction the reaction force to the weight (force-N) of the object? Why is the frictional force considered to be a centripetal force? What is friction? How is friction helpful? What happens when friction is vanished? What is force of limiting friction? Can we nullify the friction? When we walk does frictional force act backwards or forward? Is it necessary for friction to produce heat? When friction is zero what happens? If we throw a ball on a frictionless surface would it ever come to rest? You push down harder against the surface on a box at rest that has a horizontal force applied to it. Why doesn't the static force of friction change? What are some examples of friction? Is friction necessary in daily life ? Is there any material surface combination for which the kinetic friction is greater than the static friction? How do you increase friction? There is any limit of having friction? What is frictional force? What is the friction factor? Is it true that if first three fingers are positioned perpendicularly to one another and use to touch a live wire electric shock will not occur?