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How much water a pump of 2kW can raise in one minute to a height of 10m? (g=10m/s^2)

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How much water a pump of 2kW can raise in one minute to a height of 10m? (g=10m/s^2)

(a) 1000litres

(b) 1200litres

(c) 10litres

(d) 2000litres

I have been asked this question by my college director while I was bunking the class.

Enquiry is from Forces and Inertia in chapter Gravitation of Engineering Physics I

1 Answer

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Correct choice is (b) 1200litres

Explanation: P = W/t=mgh/t

m = Pt/gh=(2000×60)/(10×10)=1200kg.

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