Rotational Motion Question 179

Question: The moment of inertia of a uniform circular disc of radius ‘R’ and mass ‘M’ about an axis passing from the edge of the disc and normal to the disc is

Options:

A) MR2

B) 12MR2

C) 32MR2

D) 32MR2

Show Answer

Answer:

Correct Answer: C

Solution:

[c] M.I.

of a uniform circular disc of radius ‘R’ and mass ’ M ’ about an axis passing through C.M and normal to the disc is IC.M.=12MR2 From parallel axis theorem

IT=IC.M.+MR2=12MR2+MR2=32MR2



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