Question

Bill is moving a crate of mass 35 kg up a ramp that forms a 25 degree angle with the horizontal to a height of 5 m.

A) If the ramp is frictionless, how much work must Bill do in pushing the crate to the top?

B) How much work does gravity do as Bill pushes the crate up the ramp?

Answer 1

m g h = 35 * 9.81 * 5 Joules

part B is negative part A