A chain of uniform mass `m` and length `L` is held on a frictionless table in such a way that its `(1)/(n)`th part is hanging below the edge of table. The work done to pull the hanging part of chain is `:-`

A uniform chain of mass M and length L is lying on a frictionless table in such a way that its 1//3 parts is hanging vertically down. The work done in pulling the chain up the table is

A uniform chain of mass M and length L is lying on a frictionless table in such a way that its 1//3 parts is hanging vertically down. The work done in pulling the chain up the table is

A uniform chain of mass M and length L is lying on a frictionless table in such a way that its 1//3 parts is hanging vertically down. The work done in pulling the chain up the table is

A uniform chain has a mass m and length l . It is held on a frictionless table with one - sixth of its length hanging over the edge. The work done in just pulling the hanging part back on the table is :

A uniform cable of mass 'M' and length 'L' is placed on a horizontal surface such that its (1/n)^(th) part is hanging below the edge of the surface. To lift the hanging part of the cable upto the surface, the work done should be: