A chain of mass M is placed on a smooth table with 1/n of its length L hanging over the edge. The work done in pulling the hanging the portion of the chain back to the surface of the table is
a) MgL/n b)MgL/2n
C)MgL/n2 d)MgL/2n2
A chain of mass M is placed on a smooth table with 1/n of its length L hanging over the edge. The work done in pulling the hanging the portion of the chain back to the surface of the table is
a) MgL/n b)MgL/2n
C)MgL/n2 d)MgL/2n2