Two identical hollow spheres of mass M and radius R are joined together. About three axis (1,2 and 3 ) tangential to sphere and perpendicular to the line connecting them. The rotational inertia of the combination about these axis :-

Moment of inertia of a ring of mass M and radius R about an axis passing through the centre and perpendicular to the plane is

Two particles of masses m and 2m are placed at separation L . Find the M.I. about an axis passing through the center of mass and perpendicular to the line joining the point masses.

A sphere of mass 10 kg and radius 0.5 m rotates about a tangent. The moment of inertia of the sphere is

Two spheres each of mass M and radius R are separated by a distance of r . The gravitational potential at the midpoint of the line joining the centres of the spheres is

Two spheres each of mass M and radius R are separated by a distance of r . The gravitational potential at the midpoint of the line joining the centres of the spheres is

The M.I. of a ring of mass M and radius R about a tangential axis perpendicular to its plane is :

Four identical solid spheres each of mass M and radius R are fixed at four corners of a light square frame of side length 4R such that centres of spheres coincides with corners of square, moment of inertia of 4 spheres about an axis passing through any side of square is

Two identical spheres each of mass M and Radius R are separated by a distance 10R. The gravitational force on mass m placed at the midpoint of the line joining the centres of the spheres is

The moment of inertia of a disc of mass M and radius R about an axis. Which is tangential to sircumference of disc and parallel to its diameter is.

Three identical rods are joined together to form an equilateral triangle frame. Its radius of gyration about an axis passing through a corner and perpendicular to the plane of the triangle is.