Question

Very Short Answer (VSA) (1 MARK Each )
1. Find the radius of gyration of a uniform disc about an axis perpendicular to its plane
and passing through its center.​

Answer 1

Answer:

R/√2

Explanation:

Moment of Inertia of disc about center of mass is I = mR^2/2

Let a line parallel to axis at a distance d.

Radius of Gyration=R

Then, mR^2/2 = mR^2

⇒R^2 = R^2/2

⇒R = R/√2