Moment of inertia of a circular wire of mass $M$ and radius $R$ about its diameter is (1) $\mathrm{MR}^2 / 2$ (2) $MR^2$ (3) $2MR^2$ (4) $\mathrm{MR}^2 / 4$
Moment of inertia of a circular wire of mass $M$ and radius $R$ about its diameter is\\
(1) $\mathrm{MR}^2 / 2$\\
(2) $MR^2$\\
(3) $2MR^2$\\
(4) $\mathrm{MR}^2 / 4$