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Truss analysis, section method

  1. Jul 15, 2015 #1
    1. The problem statement, all variables and given/known data
    Determine the forces in members BC and CG. The forces are positive if in tension, negative if in compression.

    20150715_212522_zpsqjac02vi.jpg

    2. Relevant equations
    ΣF=0
    ΣM=0

    3. The attempt at a solution
    20150715_212613_zpscgwqkzpn.jpg
    I dont know where im going wrong, My equations include the applied force, since there is only one.
     
  2. jcsd
  3. Jul 15, 2015 #2
    solved. I had some signs wrong and copied down 76 insted of 78.
     
    Last edited: Jul 15, 2015
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