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Moment of Inertia help

  1. Nov 4, 2006 #1
    Determine the moment of inertia about the axis of the object shown in the figure. Enter your answer in terms of L, M, m1, and m2.
     

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    Last edited: Nov 4, 2006
  2. jcsd
  3. Nov 4, 2006 #2

    Galileo

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    What have you tried so far?

    By the way, this belongs in the homework section.
     
  4. Nov 4, 2006 #3
    ok sorry for posting in wrong section.
    Ive tried 1/12(m1+m2+M)*L^2 and 1/12(m1+m2+M)*L^2+1/4*m1*L^2-1/16*m2*L^2
     
    Last edited: Nov 4, 2006
  5. Nov 4, 2006 #4

    Galileo

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    The moment of inertia of an object about an axis is just the sum of the moments of inertia of its constituents about that axis; i.e. in this case:
    [tex]I=I_{rod}+I_{m1}+I_{m_2}[/tex]

    What do you get for these seperate moments of inertia?
     
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