Question

The moment of inertia $(J)$ of a sphere of radius $R$ and mass $M$ is given by

• A. $I=M{R}^2$
• B. $I=(1/2)M{R}^2$
• C. $I=(4/3)M{R}^2$
• D. $I=(2/5)M{R}^2$

Answer 1

Answer: (D)

Moment of inertia about its diameter is
$I=\frac{2}{5}M{R}^2$