Question

A pump lifts 20kg of water in one minute to a vertical height of 30m find the power of the pump. Answer please

Answer 1

Mass of water raised in 60 seconds = 20 kg

Mass of water raised in 1 second = $\frac{20}{60} = \frac{1}{3}$ kg

Weight to be raised by height = 30 m

Acceleration due to gravity = 9.8 m/s^2

Power = Mass rate × gravity × height

$Power = \frac{1}{3} \times 9.8 \times 30$

Power = 98 Watts

Hence, the power required is 98 Watts.