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Homework Help: Center of mass in an arc

  1. Mar 25, 2014 #1
    1. The problem statement, all variables and given/known data

    image attachment

    2. Relevant equations



    3. The attempt at a solution
    i have the solution , but in it , he assumes the center of mass is on the vertical and thus the distance of the vertical from the center is rsin(1/4∏)/(1/4∏) where r is the radius , so why did he take this assumption?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Mar 25, 2014 #2

    Simon Bridge

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    The wire is freely suspended from point A.
    If the com was not vertically below point A, then what would happen?
     
  4. Mar 26, 2014 #3
    Thanks, i got it
     
  5. Mar 26, 2014 #4

    Simon Bridge

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    Well done :)
     
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