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Moment of Inertia

  1. Nov 22, 2006 #1
    If you know the moment of inertia of two discs and place them on top of one another so they rotate about the same axis (through their centres), what is the new moment of inertia? Do you simply add the two? :confused:
  2. jcsd
  3. Nov 22, 2006 #2

    Doc Al

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    Staff: Mentor

    Yes, it's as simple as that.
  4. Nov 22, 2006 #3
    Wow, quick reply! Thanks.
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