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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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