# A water pump that consumes 2 kW of electric power when operating is claimed to t

jazzcutie0h 2021-11-20 Answered
A water pump that consumes 2 kW of electric power when operating is claimed to take in water from a lake and pump it to a pool whose free surface is 30 m above the free surface of the lake at a rate of 50 L/s. Determine if this claim is reasonable.
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## Expert Answer

mylouscrapza
Answered 2021-11-21 Author has 22 answers
Givens:
Power=2kW=2000 W

Solution:
The total cahnge in the system mechanical energy can be calculated as follows,

The power required can be calculated as follows,

The claim is false as the claimed power consumption is 2 kW which is much less than the required power consumption (14.7 kW)
Result: The claim is false as the claimed power consumption is 2 kW which is much less than the required power consumption (14.7 kW).
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