Physics - Rotation Question with Solution | TestHub

Time period of SHM for small amplitude is $2\pi \sqrt{\frac{2\mathrm{r}}{\mathrm{g}}}$

Acceleration of centre of mass of ring at lowest position is zero

Hinge force when centre of mass is at lowest point is $\frac{{\mathrm{mv}}^2}{4\mathrm{r}}$

Mechanical energy of oscillation is $\frac{{\mathrm{mv}}^2}{4}$ (when potential energy at mean position is taken as zero)