Question

A pump lifts 100kg of water through a height of 20m in 20 seconds Calculate the power of the pump

Answer 1

The power of the pump is 1000 Watts (W).

Power = Work / Time

Work = Mass x Gravity x Height

Work = 100 kg x 9.8 m/s2 x 20 m = 19,600 Joules (J)

Time = 20 seconds

Power = 19,600 J / 20 s = 980 W

Power = 980 W = 1000 W (rounded to the nearest 10)