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Homework Help: Rotation Problem Involving Two Disks

  1. Dec 3, 2012 #1
    1. The problem statement, all variables and given/known data
    I attached the problem as a word file.

    2. Relevant equations

    3. The attempt at a solution

    I think I will be able to solve this problem; my only questions is, can I treat the two disks as one, by summing their rotational inertias together?

    Attached Files:

  2. jcsd
  3. Dec 3, 2012 #2


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    Homework Helper
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    Yes. That's correct. I = Ʃmr2 where the sum is over all the particles in the system. You can break the sum into two parts, one part for the first disk and the other part for the second disk.
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