Question

What is a moment of inertia?

Answer 1

1. Moment of inertia is defined as the quantity expressed by the body resisting angular acceleration, which is the sum of the product of every particle's mass with its square distance from the axis of rotation.
2. In more simple terms, it can be described as a quantity that decides the amount of torque needed for a specific angular acceleration in a rotational axis.
3. Moment of Inertia is also known as the angular mass or rotational inertia. The SI unit of moment of inertia is $Kg{m}^2$.