A man in hauling a box of mass 100 kg up a 35 degree incline by a rope attached to the top of the box. If the rope makes an angle of 20 degrees to the incline, and the man is pulling with a net force 2000N up the inclined, what is the work done be the man to pull the box from the beginning to the top of the incline. If it takes the guy three seconds to get the box up the incline how much power did he exert. At the top of the incline the box is kicked off the incline, how much of work is done by gravity as it falls to the ground? The horizontal length from A to B is 11 meters.

20- 35