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Writing shear and moment equations for a simple beam problem?

  1. Mar 3, 2012 #1
    1. The problem statement, all variables and given/known data
    Analyze a simple beam writing out the integrals in mathcad.

    Length: 20ft (L)
    Distance to Reaction: 12ft (B)
    Distance to Distributed Load: 0ft
    Distributed Load: 273.33 lb/ft (w)


    2. Relevant equations

    V=r1-w(L-0)+r2=0
    M=r1*L-w/2*(L-0)^2+r2*(L-B)=0
    r1:=1/B*[w/2*(L-0)^2-w*(L-0)*(L-B)]
    r2:=w*(L-0)-r1



    3. The attempt at a solution

    I having issues with units or something. But would also like to know if I am on the right track.
     
  2. jcsd
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