At any instant, a rolling body may be considered to be in pure rotation about an axis through the point of contact. This axis is translating forward with speed

a) show that the energy of a rolling body which is not slipping is equivalent to that of pure rotatioin with the same angular speed about an axis through the point of contact of the rolling body. b) Show that the angular momentum of a body of mass M which is rolling without slippint about any point is equal to its angular momentum about its center plus the moment of momentum of a particle of the same mass M concentrated at its center and moving with the speed of the center of the mass of the body about the same point

A rigid body is rotating about an axis. To stop the rotation, we have to apply

What is the value of instantaneous speed of the point of contact during pure rolling?

If the speed of rotation of earth about its axis is increased,

A rigid body of mass m rotates with angular velocity omega about an axis at a distance a from the centre of mass G. The radius of gyration about a parallel axis through G is k. The kinetic energy of rotation of the body is

The door is a rigid body which can rotate about a fixed axis passing through the hinges. What makes the door rotate?

What is the kinetic energy of a rotating body about its axis of rotation ?

The axis of rotation of a purely rotating body

The axis of rotation of a purely rotating body