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Homework Help: Centroid Parabolic area

  1. Dec 13, 2007 #1
    [SOLVED] Centroid Parabolic area

    1. The problem statement, all variables and given/known data
    http://img227.imageshack.us/img227/7518/slowge9.th.jpg [Broken]
    Find the centroid of the area.


    2. Relevant equations



    3. The attempt at a solution

    I'm not quite sure what I'm screwing up on this problem, I can do other problems like when y = x^2. I have only shown my work for the x centroid, but I can't seem to get the answer (3/8b). Does anyone see where I messed up, I assume it's somewhere in the integral setup. I think dA = h-y dx is correct.
     
    Last edited by a moderator: May 3, 2017
  2. jcsd
  3. Dec 13, 2007 #2

    Shooting Star

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    The point (b,h) lies on the curve. Doesn't that suggest something, like a relationship between them, which you can put in the answer?
     
  4. Dec 14, 2007 #3
    Thanks for your reply, I figured it out
     
    Last edited: Dec 14, 2007
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