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Homework Help: Center of gravity and the center of mass

  1. Mar 12, 2006 #1
    :cry: been wonderin' for an hour already nac somebody please answer if there is a difference between the center of gravity and the center of mass if there is, what is it?
  2. jcsd
  3. Mar 12, 2006 #2
    The center of mass is a point on a body where you can consider all the mass to be concentrated, whereas the center of gravity is a point on a body where you can consider all the WEIGHT to be concentrated.
  4. Mar 12, 2006 #3


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    Homework Helper

    In any realistic situation, you can treat them both as the center-of-mass.

    I've seen center-of-gravity treated as a horizontal location (as on a floor)
    which the center-of-mass is directly above or directly below.
    In that interpretation & treatment, center-of-mass, being 3d, is more general.
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