Moment of inertia

Question

A 500 yard long train, travelling at 50 mph, enters a three mile long tunnel.

How long will elapse between the moment the front of the train enters the tunnel and the moment the end of the train clears the tunnel?

Answer 1

Moment of inertia ----> a quantity expressing a body's tendency to resist angular acceleration, which is the sum of the products of the mass of each particle in the body with the square of its distance from the axis of rotation. (Hope it was what you wanted to ask)