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Moment of Inertia of a Quarter Disc

  • Thread starter utsav55
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  • #1
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1. Find the Moment of Inertia of a Quarter Disc which has mass M and radius R about the axis passing through the center (of original disc) and perpendicular to the plane.

2. The attempt at a solution
I found the Moment of Inertia (I) of a disc about the axis passing through the center, perpendicular to the plane and divided by 4. It gave the wrong answer.

So, plz tell me that why dividing by 4 is giving me the wrong answer for the quarter disc.

Also, a hint of how should I start the problem.
 

Answers and Replies

  • #2
Doc Al
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Dividing by 4 is correct. Did you use the correct mass? (I suspect that's the problem.)
 
  • #3
15
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Dividing by 4 is correct. Did you use the correct mass? (I suspect that's the problem.)
Yes, I got it correct now.


Thanks
 

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