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Homework Help: Application of integration

  1. Apr 20, 2009 #1
    Not really a homework problem but related. In one of my homework problem, it says ,
    Calculate the moments Mx and My and the center of mass of a lamina with density ρ = 4 and the given shape.
    Mx = 2
    My = 12
    (x, y) = (2,1/3 )

    I got the answer. YOUR WELCOME.

    But, I only got it because I looked up the formula to find Mx,My and (x,y).
    the formula is given in this site near the intro http://www.math.utep.edu/Faculty/javila/Calculus%20II/Math%201312%20problems%20for%20section%207.6.pdf [Broken]

    But I was hoping one of you could prove this, since my book didn't.
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 21, 2009 #2


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    What is the given shape?
  4. Apr 21, 2009 #3
    it is a function of f(x) = 1/3x.
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