Question

A cable attached to a motor lifts a 575-N boX up a distance of 20.0 m. The box moves with a constant velocity and the job is done in 10.0 s. What power is developed by the motor in W andKW?

Answer 1

1150 W, 1.15 kW

Step-by-step explanation:

Power = work / time

Work = force × distance

Substituting:

Power = force × distance / time

P = Fd / t

P = (575 N) (20.0 m) / (10.0 s)

P = 1150 W

P = 1.15 kW