consider pendulum made from unifrom thin disk with radius R and mass M$,$ axis of rotation is the edge of the disk $($point O$).$ rendulum oscillates around equilibrium position indicated by dashed line

$1.$ find moment of inertia of the pendulum around axis of rotation through O

$2.$ find net torque of the disk function of angle theta

$3.$ find frequency og oscillation of the pendulum if R $=2$m and M $=$ o$\mathrm{.}5$kg

$4.$ find frequency