Three equal masses m are placed at the three vertices of an equilateral triangle of side a. The gravitational force exerted by this system on another particle of mass m placed at the mid point of a side

Three equal masses m are placed at the three vertices of an equilatera

1.	Three equal masses m are placed at the three vertices of an equilateral triangle of side a. The gravitational force exerted by this system on another particle of mass m placed at the mid point of a side
Answer» `(Gm^2)/(3a^2)` `(4Gm^2)/(3a^2)` `(Gm^2)/a^2` `(Gm^2)/(3a^2)` ANSWER :B