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Homework Help: Coordinates of the centroid of the lamina - problem with finding limits

  1. Sep 2, 2011 #1
    1. The problem statement, all variables and given/known data
    The question asks me to find the coordinates of the centroid of a uniform lamina enclosed by curve y=1-x^2.
    X axis and Y axis are in the 1st quadrant.

    Can you please tell me how to work out the limit for this equation?
    Last edited: Sep 2, 2011
  2. jcsd
  3. Sep 2, 2011 #2


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    Hi Matthias85! :wink:

    Show us what method you're using, and where you're stuck, and then we'll know how to help! :smile:
  4. Sep 2, 2011 #3
    Thanks for quick reply.
    I am not using any method as I have no idea how to workout limits.

    Previous question gave me limits, this says that x-axis and y-axis are in the 1st quadrant instead.
  5. Sep 2, 2011 #4


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    ah, no, that doesn't make sense :redface:

    i think it must mean "the region under y=1-x2 and in the first quadrant" (so its other two edges are the x and y axes) …

    so the limits are from x (or y) = 0 to where that curve crosses the axis :wink:
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