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**Tip 1:**

**FINDING RADIUS OF GYRATION(K)**

To find the radius of Gyration(K)

i. We consider the mass to be concentrated at a point at a distance x from the centre of mass.

ii. The moment of inertia becomes same for both.

iii. Equate the expression of moment of inertia and find the value of K

Try solving this question:

Find the radius of gyration of a hollow uniform sphere of radius R about its tangent.

Identify the correct order in which the ratio of radius of gyration to radius increases for the following bodies.

I) rolling solid sphere

II) rolling solid cylinder

III) rolling hollow cylinder

IV) rolling hollow sphere

I) rolling solid sphere

II) rolling solid cylinder

III) rolling hollow cylinder

IV) rolling hollow sphere