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Homework Help: Mass moments

  1. Apr 1, 2007 #1
    1. The problem statement, all variables and given/known data
    See attached!

    http://img77.imageshack.us/img77/6022/picture28wq0.jpg [Broken]


    2. Relevant equations
    See work...A little long to type here.


    3. The attempt at a solution

    You can see my work - and I can't figure out how to get the answers I wrote. I know the idea of Ic = Ia + Ib and whatnot, and how for these thin plates, you can say that Imass = (rho)(t)(Iarea), but I just cannot get the answer. Help please?

    http://img138.imageshack.us/img138/7645/picture29rl9.jpg [Broken]

    http://img480.imageshack.us/img480/3269/picture30nn0.jpg [Broken]

    Thanks in advance for any direction!
     
    Last edited by a moderator: May 2, 2017
  2. jcsd
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