Question

A crane raises a 150 N weight to a height of 2.0 m in in 5.0 s. The crane does work at a rate of

Answer 1

60. W

Step-by-step explanation:

60 Watts

Answer 2

The work done is (force) x (distance) = (150N) x (2m) = 300 joules.

The crane does the work at the rate of (300 J) / (5 sec) = 60 joules per second.

That rate ... (work done) / (time to do the work) ... is called power.

That 60 joules per second is called 60 watts .