Two identical spheres `A` and `B` are free to move and I, rotate about their centres. They are given the same impel `J`. The lines of action of the impulses pass through tht centre of `A` and away from the centre of `B`, then

Three identical spheres each of mass m and radius R are placed touching each other so that their centres A,B and C lie on a straight line. The position of their centre of mass from centre of A is

The radius of gyration of a uniform solid sphere of radius R., about an axis passing through a point R/2 away from the centre of the sphere is:

Why is it easier to rotate a disc than a ring of the same mass and size, about an axis passing through their centres?

An imaginary line passing through centres of curvature of two surfaces of a lens

An imaginary line passing through centres of curvature of two surfaces of a lens

Two identical rods each of moment of inertia .I. about a normal axis through centre are arranged in the from of a cross. The M.I. of the system about an axis through centre and perpendicular to the plane of system is

Two identical rings A and B are acted upon by torques tau_(A) and tau_(B) respectively. A is rotating about an axis passing through the centre of mass and perpendicular ot the plane of the ring. B is rotating about a chord at a distance 1/(sqrt(2)) times the radius of the ring. If the angular acceleration of the ring is the same, then