Question

What is the power when a crane lifts a piece of pipe from the ground to a certain height, doing 15000 J of work in 25s?

A) 375000 W

B) 600 W

C) 100 W

D) 350 W

Answer 1

Answer: Option B) 600 W

Step-by-step explanation:

Since power is the rate of work done per unit time

i.e Power = work/time

Given that:

power of a crane = ?

work done by crane = 15000 J

Time = 25 seconds

Power = 15000J / 25s

Power = 600 watts