Question

The moment of inertia of a circular ring about one of its diameter is i. What will be moment of inertia about tangent parallel to diameter

Answer 1

Moment of inertia about tangent parallel to diameter will be same

Answer 2

Rotational inertia is important in almost all physics problems that involve mass in rotational motion. It is used to calculate angular momentum and allows us to explain (via conservation of angular momentum) how rotational motion changes when the distribution of mass changes.