Question

A weight-lifter raises a 2000N weight through a vertical height of 2.0m in 0.80s. What
useful power does he develop in doing this?
A. 5000W
B. 700W
C. 4000W

Answer 1

please mark as brainliest

Answer 2

Answer:

C. 5000W. Please mark me as brainliest.

Explanation:

Power = Work/Time

Work = Force x displacement

Here, force applied = weight of the object

Work = 2000N x 2m

= 4000Nm = 4000J

Power = 4000J/0.8s

= 40000J/8s

= 5000J/s = 5000W