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Center of mass and center of area

  1. Sep 16, 2012 #1
    what is the difference between center of mass and center of area ??

    i know that they are the same for an constant density body but why ?and why they are different for nonconst density body??

    thank u ,,​
  2. jcsd
  3. Sep 16, 2012 #2
    The center is a geometric center, the center of mass is where the mass is balanced. Think about your pencil or pen, usually the eraser and that metal on the end is a little bit heavier, so if you want to balance it you need to have your finger slightly towards it and not in the geometric center, hence its center of mass is where its balanced.
  4. Sep 17, 2012 #3
    thank u
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