Question

Select correct statement about the formula (expression) of moment of inertia (M.I.) in terms of mass M of the object and some of its distance parameter/s, such as R, L, etc.

(A) Different objects must have different expressions for their M.I. 

(B) When rotating about their central axis, a hollow right circular cone and a disc have the same expression for the M.I. 

(C) Expression for the M.I. for a parallelepiped rotating about the transverse axis passing through its center includes its depth. 

(D) Expression for M.I. of a rod and that of a plane sheet is the same about a transverse axis.

Answer 1

Correct answer is: (B) When rotating about their central axis, a hollow right circular cone and a disc have the same expression for the M.I.