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प्रश्न
A water pump raises 80 kg of water through a height of 20 m in 10 s. Calculate the power of the pump.
संख्यात्मक
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उत्तर
Given, mass of water = 80 kg
height = 20 m
g = 10 ms-2
time taken = 10s
Work done = mgh = 80 x 10 x 20 = 16000 J
Power = `"work done"/"time taken" = 16000/10 = 1600 "watt"`
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