Question

A mass of 10 kg, which may be a point-like object, is attached to a rope of length 1.5 m and is being rotated. What is the moment of inertia(in kg. meter squared) of the object?

Answer 1

The moment of inertia is

$$I=mR^2=10·1.5^2=22.5\text{ kg}·\text m^2.$$