Question

Calculate the power of a pump which can lift 40 kg of water to the height of

19 m in 40 seconds. ( g=10m/s^2)
​

Answer 1

Answer:

ANSWER

m=400kg

H=10m

t=40sec

Input energy =400×g×H=mgn

E

i

=400×10×10=40000J

Energy per sec,E

1

=

40

40000

=1000J/s

Power input =1000J/s

output =1000×80%

800J/s=800W

Explanation:

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