The moment of inertia of a circular disc about its diameter is 500 kg `m^(2)`. If its radius is 2 m, than its radius of gyration is

Options

A. 1 m
B. 2 m
C. `2sqrt(2)m`
D. 4 m

Answer

A

Explanation

`K_(d)=(R )/(2)=(2)/(2)=1 m`.