From a circular disc of radius and mass 9M, a small disc of radius is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is [2005]

Question

From a circular disc of radius $R$ and mass 9M, a small disc of radius $\frac{R}{3}$ is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is [2005]

Smart Achievers · Accepted Answer

Solution

Q.
From a circular disc of radius $R$ and mass 9M, a small disc of radius $\frac{R}{3}$ is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is [2005]

1 $4 M R^{2}$

2 $\frac{40}{9} M R^{2}$

3 $10 M R^{2}$

4 $\frac{37}{9} M R^{2}$

Ans.
(1)

(1)

Want Us to Email you About Special Offers & Updates?

Solution

Q. From a circular disc of radius R and mass 9M, a small disc of radius R3 is removed from the disc. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through O is [2005]

1 4MR2

2 409MR2

3 10MR2

4 379MR2

Ans. (1)

(1)