increasing the mass of the box decreasing the length of the ramp decreasing the steepness of the ramp increasing the friction on the surface of the box
A student is pushing a 20-kilogram box up a ramp. Which change will require the student to use less force to push the box?

Options:
- increasing the mass of the box
- decreasing the length of the ramp
- decreasing the steepness of the ramp
- increasing the friction on the surface of the box

decreasing the steepness of the ramp