A disc of radius `R` is pivoted at its rim. The period for small oscillations about an axis perpendicular to the plane of disc is

A uniform disc of radius R is pivoted at point O on its circumstances. The time period of small oscillations about an axis passing through O and perpendicular to plane of disc will be

A disc of radius R and mass M is pivoted at the rim and it set for small oscillations. If simple pendulum has to have the same period as that of the disc, the length of the simple pendulum should be

A rectangular piece of dimension lxxb is cut out of central portion of a uniform circular disc of mass m and radius r. The moment of inertia of the remaining piece about an axis perpendicular to the plane of the disc and passing through its centre is :

A disc of radius R and mass M is plvoted at the rim and is set for small oscillation. if simple pendlum has to have the same period as that the of the disc, the length of the simple pendlum should to