Three particles each of mass `m` are kept at vertices of an equilateral triangle of side L. The gravitational field at centre due to these particle is

Options

A. zero
B. `(Gm^(2))/(a^(2))`
C. `(2Gm^(2))/(a^(2))`
D. `(3Gm^(2))/(a^(2))`

Answer

a

Explanation

`V=-(GM)/(r//2)-(GM)/(r//2)=-(4GM)/(r)`