A girl lifts a 100 N load to a height of 2.0 m in 0.5 sec. What power does the girl produce?

Answer: The power produced by the girl is 400 watts.

Explanation-

According to the question, load (w) = 100N

Height, h = 2.0m

Time taken, t = 0.5 sec

Mathematically, Power = Work done / Time taken

Work (W) = Force * Distance

= Load * Height

= 100 * 2.0 = 200 Joules

Putting the value of work and time in the formula of power, we get-

Power = 200Joule / 0.5 sec

= 400 watts