Question

What is radius of gyration?

Answer 1

radius of gyration or grey radius refers to distribution of the components of an object around and Axes in term of mass moment of inertia it is the perpendicular distance from the axis of rotation to a point mass (of mass M )that gives an equivalent inertia to original object (s) (of mass M )

Answer 2

$\textbf{Answer is in attachment!}$