Questions
The moment of inertia of a cylinder about its own axis is equal to its moment of inertia about an axis passing through its centre and perpendicular to its length. The ratio of length to radius is
detailed solution
Correct option is D
Let the moment of inertia of the cylinder about its own axis AB is I1, and moment of inertia about an axis passing through its centre and perpendicular to its length be I2.Then I1=I2or MR22=MR24+ML212 or R24=L212or L2R2=124=3 or LR=31Talk to our academic expert!
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The moment of inertia of a thin uniform rod of mass M and length L about an axis passing through its mid-point and perpendicular to its length is I0 , Its moment of inertia about an axis passing through one of its ends and perpendicular to its length is
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