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Moment of inertia of a uniform circular ...

Moment of inertia of a uniform circular disc about a diameter is `I`. Its moment of inertia about an axis perpendicular to its plane and passing through a point on its rim will be.

A

6 l

B

4 L

C

2 l

D

8 l

Text Solution

Verified by Experts

The correct Answer is:
A
Moment of inertia of a disc about a diameter is
`(1)/(4)MR^(2)=l" (given)"`
Now, required moment of inertia `=(3)/(2)MR^(2)=(3)/(2)(4l)=6l`
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