Four equal masses m are placed at the corners of a square of side a. If the magnitude of gravitational potential at the centre is n√2 Gm/a, find n.

Question

G1 Physics · Accepted Answer

Each corner is at distance a/√2. Potential magnitude due to one mass is √2Gm/a. Four masses give |V|=4√2Gm/a, hence n=4.