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Math Help - Moment of Inertia

  1. #1
    Junior Member
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    Dec 2008
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    Moment of Inertia

    I have a homework question that i simply can't get my head around, and it's driving me nuts, any help would be greatly appreciated,

    The question wants me to calculate the moment of inertia for a thin disk radius b with uniform density p, that lies in the x-y plane.

    But it wants me to find the moment of inertia about the x axis, using polar co ordinates.

    I have worked this out using perp. axis thm but i'm not allowed to use that here, have to calculate from scratch.

    thanks for any help.
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  2. #2
    Junior Member
    Joined
    Dec 2008
    Posts
    70

    Re: Moment of Inertia

    It's ok, worked it out was simply stuffing up the integration, and thought i was further off than i was.
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