Question

Moment of inertia of a hollow sphere of mass m and radius r and hollow upto half its radius

Answer 1

Originally Answered: What is the expression for the moment of inertia for a solid sphere about its diameter?

The moment of inertia is the reluctance to change the state of motion (rotation) of an object rotating around a given axis

Therefore, the moment of inertia of a solid sphere about its diameter (axis) is expressed as follows;

I=(2/5)*m*r^2

Where;

m-mass of the solid sphere

r -radius of the sphere