Question

the earth two objects A and B placed at same distance from its centre with same force.
Prove that their masses are equal.​

Answer 1

(a) Let mass of first body be m1 Let mass of second body be m2 Force on 1st body = Force on 2nd body GMmi/R2 = GMm2/R2 G and G cancel. M and M cancel, R2 and R2 cancel This leaves

1\41 =M2

Hence proved. (b) g = GM/ R2 (c) Its value is constant in universe

Hope helps