Recent content by Quartz

  1. Q

    Find the moment of inertia of this disk help

    wans't my original post "04.10.08, 09:32"? and I got help from my teacher so there.
  2. Q

    Find the moment of inertia of this disk help

    Thanks! wow great help!! this forum is the bestest!!!!!!!!!! so you mean I pretend it's a solid and then subtract the drilled hole? then with the theorem and some substitution i can get the answer!? wow great, thanks so much. too bad i handed this homework in days ago. but thank god you...
  3. Q

    Find the moment of inertia of this disk help

    Homework Statement A curcial part of a piece of machinery starts as a flat uniform cylindrical disk of radius R0 and mass M. It then has a circular hole of radius R1 drilled into it. The hole's center is a distance h from the center of the disk. Find the moment of inertia of this disk (with...
  4. Q

    One more problem

    A curcial part of a piece of machinery starts as a flat uniform cylindrical disk of radius R0 and mass M. It then has a circular hole of radius R1 drilled into it. The hole's center is a distance h from the center of the disk. Find the moment of inertia of this disk (with off-center hole) when...
  5. Q

    Derivation of moment inertia formula

    How do I derive the formula 1/12 Ml^2? Derive the formula for moment of inertia of a uniform thin rod of length l about an axis through its center perpendicular to the rod.
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