What is the power of a pump which takes 10
seconds to lift 100 kg of water to a water tank situated at a height of
20 m ? (g = 10 m s-2)
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Answer:
We have,
m= 100kg
g= 10 m/s²
t = 10s
work done = mgh
W = 100 X 10 X 20
Work done = 20000 J
P = Work done/time taken
Power = 20000/10
Therefore, power = 2000 W
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