If three particles each of mass m are placed at the three corners of an equilational triangle of side 1, the workdone to increase the side of that triangle 21 is:

If three particles each of mass m are placed at the three corners of a

1.	If three particles each of mass m are placed at the three corners of an equilational triangle of side 1, the workdone to increase the side of that triangle 21 is:
Answer» `(3GM^(2))/L` `(3Gm^(2))/(2l)` `(Gm^(2))/(2l)` `(Gm^(2))/l` Answer :B