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A man slowly pulls a bucket of water fro...

A man slowly pulls a bucket of water from a well of depth `h=20m`. The mass of the uniform rope and bucket full of water are `m=200g` and `M=19.9kg` respectively. Find the work done (in kJ) by the mean.

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The correct Answer is:
`04.00`
As the centre of gravity of rope comes up by `h/2` and that of bucket by , required work would be `w = sqrt(etagr) + Mgh = 4000J`
`= 4kJ`
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