Question
Physics Question on System of Particles & Rotational Motion
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
A
2 : 1
B
5 : 6
C
2 : 3
D
1 : 2
Answer
5 : 6
Explanation
Solution
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 2 : 1.