The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and…

The ratio of the radius of gyration of a thin uniform disc about an axis passing through its centre and normal to its plane to the radius of gyration of the disc about its diameter is
  1. 2:1
  2. 4:1
  3. 1:2
  4. 2:1

Solution

For a thin uniform disc.

Radius of gyration

Case 1: K1=R2

Case 2:  K2=R2

Q⇒K1K2=?

∴K1K2=R2R2 =2

Asked in: NEET 2022 (Phase 1)

Practice more Rotational Motion questions on Aicharya