Question

A student weighing 727 N climbs at constant speed to the top of an 12 m vertical rope in 15 s. What is the average power expended by the student to overcome gravity? Answer in units of W.

Answer 1

Average Power =581.6W

Step-by-step explanation:

Power is the rate of doing work.

Power
`=(W)/(t)`

W = F*S

Power
`=(F*S)/(t)`

Where F is force, S is distance, t is time

F= weight of the student= 727N

S=12m, t= 15sec

Power
`=(727*12)/(15)`

Power =581.6W