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Math Help - mass center

  1. #1
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    Oct 2009
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    mass center

    okay, i just need to know if i did this right or not.

    the problem: find the coordinates of mass center by the region bounded by x=5-y^2 and x=0.

    i graphed the situation, but i considered this function y=\sqrt{5-x} to compute the coordinates. Do i need to duplicate the result to get the coordinates?

    i'm a bit lost, thanks for the help.
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  2. #2
    Super Member
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    Quote Originally Posted by palpyko View Post
    okay, i just need to know if i did this right or not.

    the problem: find the coordinates of mass center by the region bounded by x=5-y^2 and x=0.

    i graphed the situation, but i considered this function y=\sqrt{5-x} to compute the coordinates. Do i need to duplicate the result to get the coordinates?

    i'm a bit lost, thanks for the help.

     y = \pm \sqrt{5-x}

    The Y coordinates will be pos/neg of the values you compute.
    Since it is centered about the x-axis, the additional data is not necessary to determine the mass center, as you could consider only those ordinates in quadrant 1; which is what it appears that you are going to do.

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