Question

Three particles each of mass M are situated at the vertices of an equilateral triangle of side length a. The only forces acting on the particles are their mutual gravitational forces. It is desired that each particle moves in a circle while maintaining the original mutual separation a. What is the net gravitational force on one of the particles ?

• A.
• B.
• C.
• D. $\frac { 2 \mathrm { GM } ^ { 2 } } { \mathrm { a } ^ { 2 } }$

Answer 1

Answer: (C)

Answer 2

F =