Two identical solid copper spheres of radius `R` placed in contact with each other. The gravitational attracton between them is proportional to

Two identical solid copper sphere of radius R are placed in contact with each other. The gravitational force between them is proportional to.

Two identical copper spheres of radius R are in contact with each other. If the gravitational attraction between them is F , find the relation between F and R .

Two identical copper spheres of radius R are in contact with each other. If the gravitational attraction between them is F , find the relation between F and R .

Two identical copper spheres of radius R are in contact with each other. If the gravitational attraction between them is F, find the relation berween F and R.