In classical mechanics, the moment of inertia (also known as mass moment of inertia) is usually represented by I, with the SI unit of kg * m2, which can be described as the inertia of an object with respect to rotational motion. For a point mass, I = mr^2, where m is its mass and r is the perpendicular distance between the point mass and the axis of rotation. The role of the moment of inertia in rotational dynamics is equivalent to that of mass in linear dynamics, describing the relationship between several quantities such as angular momentum, angular velocity, torque and angular acceleration.

Formula used:

Moment of inertia = M * D²

M = Mass

D = perpendicular distance between the mass point and the axis of rotation