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Why are there two values of Hy here?

  1. Feb 2, 2014 #1
    1. The problem statement, all variables and given/known data

    66wumq.jpg

    2. Relevant equations

    ∑M at H = 0 and ∑M at I = 0
    ∑Fy = 0

    3. The attempt at a solution
    Assuming that Iy is positive and Ix is negative; Hy is negative and Hx is positive.

    Now I would like to compute for Iy and Hy using
    ∑M at H = 0 = Iy(2.3) - 50(3.05)
    Iy = 66.3043
    ∑Fy = 0 = -50 + 66.3043 - Hy = 0
    Hy = 16.3043

    But if I use
    ∑M at I = 0 = Hy(2.3) - 50(3.05)
    Hy = 66.3043

    Why do I have different values for Hy?


    Also, is DI a two force member?
     
  2. jcsd
  3. Feb 3, 2014 #2

    NascentOxygen

    User Avatar

    Staff: Mentor

    Are you sure about that 3.05 distance?
     
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