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A pump is required to lift 800 kg of wat...

A pump is required to lift `800 kg` of water per minute from a 10 m deep well and eject it with speed of `20 kg m//s` . The required power in watts of the pump will be

A

`6000`

B

`4000`

C

`5000`

D

`8000`

Text Solution

Verified by Experts

The correct Answer is:
B
`P=W/t =(mgh + (1)/(2)mv^(2))/t`
`=((800 xx 10 xx 10) + (1)/(2) xx 800 xx (20)^(2))/t`
`=4000 W`.
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