Question

A pump raises 2000 litres of water at a height of 20 m in 100 seconds. Calculate the

power of the pump. [Take 1 litre = 1 kg, g = 10 m/s2
]​

Answer 1

Answer:

 (P) of the pump that lifts Q=100 liters of water (density, ρ=1 kg/Ltr) at a vertical height H=1.2 m in time t=10 sec is given as follows

P=ρgQHt

=1⋅9.81⋅100⋅1.210

=117.72 W

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