Answer
The moment of inertia, otherwise known as the angular mass or rotational inertia, of a rigid body, is a tensor that determines the torque needed for a desired angular acceleration about a rotational axis. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rotation. Because of different mass distribution across different axis moment of inertia changes with the axis chosen.
Physically it means how much torque required to rotate the body around a given axis.
Work Step by Step
The moment of inertia, otherwise known as the angular mass or rotational inertia, of a rigid body, is a tensor that determines the torque needed for a desired angular acceleration about a rotational axis. It depends on the body's mass distribution and the axis chosen, with larger moments requiring more torque to change the body's rotation. Because of different mass distribution across different axis moment of inertia changes with the axis chosen.
Physically it means how much torque required to rotate the body around a given axis.
