Question

Difference b/w moment of inertia and polar moment of inertia

Answer 1

Moment of Inertia is often refereed as mass moment of inertia or the angular mass. It is the measure of an object's resistance against the angular acceleration. ... On the other hand, Polar Moment of Inertia is a measure of a body's ability to resistance against the torsion when torque is being applied.

Answer 2

Inertia is a force. Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity.