Question

What are effect of distribution mass on the moment of inertia?

Answer 1

Thus, moment of inertia depends upon mass. It is not equally easy to rotate both of them about the same axis of rotation. More efforts are required for the object at a greater distance to accelerate to the same angular velocity. ... If the mass is farther away from the axis, its moment of inertia is greater.

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.