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Homework Help: Urgent (lab due tomorrow)-How do I find the MOI?

  1. Feb 18, 2010 #1
    Sorry about the somewhat extreme thread but I'm sort of desperate. I missed nearly the whole rotation unit cause of illness and I need to find the MOI for a lab that's due tomorrow. I'm confused about what to plug in where. The lab goal is to find the MOI of a rod of uniform density swinging with a point of rotation at the end of the rod. The rod has a mass attached about 3/4 the way down the rod from the point of rotation. The mass is a circular washer and is about 20 g in weight. The rod is 1 m long and weights 97.1 g. How do you find the MOI of the rod/mass complex

  2. jcsd
  3. Feb 19, 2010 #2


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    Staff: Mentor

    Welcome to the PF. Hope you're feeling better.

    This resource should help you out:


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