The ratio of the radii of gyration of a circular disc about a tangential axis in the plane of the disc and of a circular ring of the same radius about a tangential axis in the plane of the ring is:

Step-by-step solution

The radius of gyration of disc about a tangential axis in the plane of disc is k₁ k₁= 5 2 R And radius of gyration of circular ring of same radius about tangential axis is given by: aligned k₂ & = 3 2 R k₁ k₂ & = 5 2 R 2 3 R & = 5 6 aligned