A solid sphere of uniform density and radius
R exerts a gravitational force of attraction
F1 on the particle
P, distant
2R from the centre of the sphere. A spherical cavity of radius
R/2 is now formed in the sphere as shown in figure. The sphere with cavity now applies a gravitational force
F2 on the same particle
P. Find the ratio
F2/F1.
![794555_0c81127cc98946d0bfe31b6c404c6184.PNG](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/794555_0c81127cc98946d0bfe31b6c404c6184.PNG)