Question

A powered winch pulls a 82.5-kg box up a frictionless ramp of height h = 4.65 m by a cable as shown in the figure below. The ramp rises at an angle θ = 25.0° above the horizontal. The box, starting from rest at the bottom, steadily accelerates at 2.05 m/s2 to a final speed of 6.72 m/s at the top. (a) the average power P delivered by the winch (via the cable's tension) to the box while being pulled up the ramp (b) the instantaneous power P delivered by the winch to the box at the top of the ramp

Answer 1