Physics - Rotation Question with Solution | TestHub

Formula for moment of inertia are listed below: $I_{\text{Ring }}=M{R}^2$ $I_{\text{Sphere }}=\frac{2}{5}M{R}^2$ $I_{\text{Disc }}=\frac{1}{2}M{R}^2$ Ring has largest moment of inertia as the mass is distributed far away from the axis of rotation. Above formulas just confirm that.