Mass moment of inertia is calculated by multiplying an object's center of mass by the square of the distance to its axis of rotation. If that sounds a lot like torque, that's because it is.

Moment of inertia is different than mass, ... This equation says – take each mass. Multiply the mass by the distance to the axis squared and add up all these terms.

There is an analogous equation for rotary motion. We have T = J*Θ where “T” is the torque applied to some object having a moment of inertia “J” which experiences a rotary acceleration called “Θ” which ...