Three equal mass 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 mass m are placed at the three vertices of an equilateral

1.	Three equal mass 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