Question

a water pump is used to draw 80 kg of water from a 40m deep well in 8 s. when the force of gravity on 1kg of water is 10N. find: a) a work done by pump, b) potential energy stored in the water, c) power spent by the group​

Answer 1

Explanation:

Force=m×g

F=500×10=5000N

Work=F×s  

W=5000×80=4×105joule.

Power=work/time

P=4×105/10=4×104=40kW.

Power Rating=Useful power/ efficiency

Power Rating = 40k/0.4=100kW

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Answer 2

Answer:

sorry

Explanation: