(a) Work = M g H, where the height of the rise (H) is 65 sin 30 = 32.5 m
(b) Power = (Work)/(Time)
Time = 65m/2.7 m/s = 24.07 s
A skier of mass 72 kg is pulled up a slope by a motor-driven cable.
(a) How much work is required to pull him 65 m up a 30° slope (assumed frictionless) at a constant speed of 2.7 m/s?
(b) What power must a motor have to perform this task?
1 answer
1 answer