Moment of inertia is the analogue of mass in rotational motion. But unlike mass, it is not a fixed quantity. The moments of inertia of two rotating bodies A and B are ` I_A` and `I_B ` lf`( I_A> I_B)` and their angular momentum are equal. Which one has a greater kinetic energy? Explain.

Moment of inertia is the analogue of mass in rotational motion. But unlike mass, it is not a fixed quantity.Moment of inertia can be regarded as a measure of rotational inertia. Why?

Moment of inertia in rotational motion is analogus to mass in linear motion.The moment of inertia of a circular disc about an axis perpendicular to the plane, at the centre is given by.

Moment of inertia plays the same roll in rotational motion as mass in linear motion. The moment of inertia of a body changes when the axis of rotation changes.If the moment of inertia of a disc about an axis passing through its centre and perpendicular to its plane is (MR^2)/2) ( M is the mass of the disc and R its radius). Determine its moment of inertia about a diameter and about a tangent.