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