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Center of Mass with Circle that has a Cut Out

  1. Feb 18, 2013 #1
    1. The problem statement, all variables and given/known data
    Find the center of mass of a 5kg circle with a radius of 4m with a circle that has a radius of 2m cut out from it.

    2. Relevant equations

    3. The attempt at a solution
    To be completely honest, I do not know where to start. I do know how to find the center of mass when you have points on a plane. But I cannot seem to find the connection between this and that.

    Thank you
  2. jcsd
  3. Feb 18, 2013 #2


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    Welcome to PF!

    Hi SerhanFT9! Welcome to PF! :smile:

    You can treat the hole as a solid of negative mass. :wink:
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