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A uniform chain of length L and mass M i...

A uniform chain of length `L` and mass `M` is lying on a smooth table and one-third of its length is hanging vertically down over the edge of the table. If g is the acceleration due to gravity, the work required to pull the hanging part on to the table is

A

`MgL`

B

`(MgL)/(3)`

C

`(MgL)/(9)`

D

`(MgL)/(18)`

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The correct Answer is:
D
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