Question

the gravitation force between two object is 100 N how should the distance the object be change so that force between them becomes 50N​

Answer 1

F1 = G M m / d1²

F2 = G M m / d2²

F1 / F2 = d2² / d1²

100 / 50 = (d2/d1)²

d2 = √2 d1

distance should be  √2 times the previous