Three particles each of mass m are placed at the three corners of an equilateral triangle of side a. The work done on the system to increase the sides of the triangle to 2a is:

Answer

A, B, C

Explanation

Initially the side the triangle =a
To increase it 2a
work done `=(GM^2)/(2a)+(GM^2)/a`
`=(3GM^2)/(2a)`