Question

A water pump raises 400 kg of water to a height 15 m in 20 sec. What is the power of the pump in kilowatt

Answer 1

Answer:

Power of the pump is 2.94 kW

Explanation:

Mass of water m=400 kg

Height h=15 m

Time taken t=20 s

$Power=\frac{Work}{time} =\frac{change of potential energy}{time} \\P=\frac{mgh}{t} \\P=\frac{400 \times 9.8\times 15}{20} \\P=2940 W\\P=2.94 kW$

Power of the pump is 2.94 kW