Question

A body having its centre of mass at the origin has three of its particles at (a,0,0), (0,a,0), (0,0,a). The moments of inertia of the body about the X and Y axes are 0.20 kg—m² each. The moment of inertia about the Z-axis

(a) is 0.20 kg-m²

(b) is 0.40 kg-m²

(c) is 0.20-√2 kg-m²

(d) cannot be deduced with this information.

Answer 1

(d) cannot be deduced with this information.

Explanation: 

To know the moment of inertia we need to know the mass and shape of the body. None is available in the problem, hence the option (d).