A flywheel is suspended by resting the inside of of the rim on a horizontal knife-edge so that the wheel can swin in a vertical plane. The flywheel has a mass of 350kg. The knife-edge is parallel to and 350mm from the axis of the wheel. The time for making one oscillation is 1.2s. Assuming that the centre of gravity is in the axis of the wheel. Find: 1.the radius of gyration about this axis.

A flywheel is suspended by resting the inside of of the rim on a horizontal knife-edge so that the wheel can swin in a vertical plane. The flywheel has a mass of 350kg. The knife-edge is parallel to and 350mm from the axis of the wheel. The time for making one oscillation is 1.2s. Assuming that the centre of gravity is in the axis of the wheel. Find: 1.the radius of gyration about this axis.