The power of a motor pump in 60W. Find the mass of water, the pump can lift per minute from a 10m deep well.
Class 9, physics, work and energy
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Answer:
Given, power, A = 60 W, time, t =60 s Height, h = 10m
Energy supplied to the pump = Power X Time
= 60 W x 1 min [v 1 min = 60 s] = 60 Wx 60s = 3600 Ws= 3600J So, energy,
E = mgh =>
3600 = m X 10 X 10
=> m = 36 kg
So, mass of the water is 36 kg.
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