defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Physics Gravitation Universal law of gravitation
A solid sphere of radius R gravitationally attracts a particle placed at 3R from its center with a force F1. Now a spherical cavity of radius R/2 is made in the sphere (as shown in figure) and the force becomes F2. The value of F1 : F2 is:
1
41 ∶ 50
2
36 ∶ 25
3
50 ∶ 41
4
25 ∶ 36