Question

-True or false? -moment of inertia is rotational analog of mass Thanks

Answer 1

That is true.

Explanation:

Mass is a measure of an object's reluctance (or willingness) to accelerate in linear motion when you apply a force.

Moment of inertia is a measure of an object's reluctance (or willingness) to accelerate in rotational motion when you apply a torque.

I am sure that you are familiar with the formula F=ma in linear motion (Newton's 2nd Law). The rotational analog is

`tau = I*alpha`

where `tau` (tau) is torque, `I` is moment of inertia, and `alpha` (alpha) is angular acceleration.

I hope this helps,
Steve