Two metal spheres each of radius `r` are kept in contact with each other. If `d` is the density of the material of the sphere,then the gravitational force between those spheres is proportional to

The identical metal spheres of radius 10 cm are in contact with each other. If density of the metal is 10 g/cc, the graviational force between the spheres is (pi^(2)=10)

Two identical spheres each of radius R are placed with their centres at a distance nR , where n is integer greater than 2 . The gravitational force between them will be proportional to

Two identical spheres of radius R made of the same material are kept at a distance d apart. Then the gravitational attraction 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 berween F and R.

Two spheres of same mass and radius are in contact with each other. If the moment of inertia of a sphere about its diameter is I, then the moment of inertia of both the spheres about the tangent at their common point would be

Three uniform spheres each of mass m and diameter D are kept in such a way that each touches the other two, then magnitudes of the gravitational force on any one sphere due to the other two is

Two balls, each of radius R, equal mass and density are placed in contact, then the force of gravitation between them is proportional to

Thee uniform spheres each having a mass M and raius a are kept in such a way that each touches the other two. Find the magnitude of the gravitational force on any of the spheres due to the other two.