An engine raises 1000kg of water through a height of 60m in 20s. What is the power of the engine? (Take g = 10ms−²).

A. 120,000 W
B. 30,000 W
C. 333 W
D. 300 W
E. 30 W

Correct Answer:

Option B – 30,000 W

Explanation

P = mgh/t = (1000 × 10 × 60) ÷ 20 = 30,000 W.