A pump lifts 400 kg of water per hour a height of 4.5 m . Part A What is the minimum necessary power output rating of the water

Question

A pump lifts 400 kg of water per hour a height of 4.5 m .
Part A
What is the minimum necessary power output rating of the water pump in watts?
Express your answer using two significant figures.
Part B
What is the minimum necessary power output rating of the water pump in horsepower?
Express your answer using two significant figures.

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Farah 3 years 2021-07-14T01:45:30+00:00 1 Answers 17 views 0

Answers ( )

  1. Latifah
    0
    2021-07-14T01:47:28+00:00
    Reply

    Answer:

    Power = Work / Time

    P = 400 kg * 9.8 m/s * 4.5 m / 3600 sec = 4.9 J/s = 4.9 Watts

    Also, 4.9 Watts / (746 Watts / Horsepower) = .0066 Hp

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