AIPMT MAINS2010Physics-Rotational Motion

AIPMT MAINS 2010 Physics Moment of Inertia MCQ Question

Type: MCQ-numerical-Hard-Class 11

From a circular disc of radius R and mass 9M, a small disc of mass M and radius R/3 is removed concentrically. The moment of inertia of the remaining disc about an axis perpendicular to the plane of the disc and passing through its centre is

A

40/9 MR²

B

MR²

C

4 MR²

D

4/9 MR²

Correct Answer

Option A

Detailed Explanation

The moment of inertia of the removed disc is subtracted from the moment of inertia of the original disc. Using the parallel axis theorem, the remaining moment of inertia is calculated.

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