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Calculating Center of Mass, 1988 Physics C Mechanics MC

  1. Mar 1, 2012 #1
    A piece of wire of uniform cross section is bent in the shape shown above (for picture: http://tinypic.com/r/23tjr45/5). What are the coordinates of the center of mass?



    Relevant equations:
    Was I supposed to integrate the wire on all 4 sides? I wasn't sure exactly what to do at this point.


    The attempt at a solution
    Basically, I eyeballed the graph and picked a point in the far right corner because I thought that would be where the most mass is concentrated. The correct answer, however, is (A)(15/14, 6/7)
     
  2. jcsd
  3. Mar 1, 2012 #2
    Hint:

    You know where the cm of each bar is so how do you combine them?
     
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