If three particles each of mass m are placed at the three corners of an equilateral triangle of side l, the work done if the side of that triangle is increased to 2l 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 l, the work done if the side of that triangle is increased to 2l is
Answer» `(3GM^(2))/(l)` `(GM^(2))/(2l)` `(-3Gm^(2))/(2l)` `(3Gm^(2))/(2l)` ANSWER :D