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Homework Help: Quick easy physics question (Center of mass)

  1. Mar 5, 2005 #1
    I'm having a difficult time with this question, and I'm sure it's easy. The question is, find the center of mass of the three-mass system. Specify relative to the left-hand 1.00kg mass.
    Mass1 = 1kg Distance = 0m?
    Mass2 = 1.5kg Distance = .50m
    Mass3 = 1.1kg Distance = .75m

    I'm having trouble because when you use the equation
    CoM = (m1x1 + m2x2 + m3x3)/(m1+m2+m3), the first m1x1 becomes 0 and I'm sure that's not right.
  2. jcsd
  3. Mar 6, 2005 #2


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    No, that's fine. What do you get?
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