Q.

A pump is used to raise water to a height of 20 m. It transfers 2000 kg of water in 15 minutes. The power of the pump is approximately [[1]] Watts.


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Detailed Solution

A pump is used to raise water to a height of 20 m. It transfers 2000 kg of water in 15 minutes. The power of the pump is approximately 444.4 Watts.
Given:
mass, m=2000 kg
time, t=15 minutes
 = 15 × 60 s
 = 900 s
height, h=20 m
we know power, P=Wt
here work done = mg × h  [Force × displacement]
Power, P=mght
     =2000×10×2015×60
     =2×10445
= 444.4 W
 
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A pump is used to raise water to a height of 20 m. It transfers 2000 kg of water in 15 minutes. The power of the pump is approximately [[1]] Watts.