Question

torque in terms of angular displacement and moment of inertia

Answer 1

The property due to which a body has a tandancy to appose the change in its rotational state is called moment of inertia

Answer 2

The moment of inertia of a point mass with respect to an axis is defined as the product of the mass times the distance from the axis squared. The moment of inertia of any extended object is built up from that basic definition