Starting from rest, a student pulls a (34) kg box a distance of (13.50) m across the floor using a (161) N force applied at 35.0 degrees above horizontal. The coefficient of kinetic friction is 0.220 between the floor and the box. Find the work done by the pulling force. Give your answer in joules (J) and with 3 significant figures.

Question

Starting from rest, a student pulls a (34) kg box a distance of (13.50) m across the floor using a (161) N force applied at 35.0 degrees above horizontal.  The coefficient of kinetic friction is 0.220 between the floor and the box.  Find the work done by the pulling force.  Give your answer in joules (J) and with 3 significant figures.

Anonymous · Answer

work = pulling force in direction of motion * distance

like period, the friction and all are irrelevant.

work = 161 cos 35 * 13.5

If there are more parts like how fast does it go or something, the rest matters, but that is all you need to know for the question you asked.