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Thread: 2 Force Members and Trusses! HELP!

  1. #1
    Jan 2010

    Question 2 Force Members and Trusses! HELP!

    1. The problem statement, all variables and given/known data

    See Figure

    2. Relevant equations

    $\displaystyle \sum F_{x} = 0 $
    $\displaystyle \sum F_{y} = 0 $
    $\displaystyle \sum M = 0 $

    3. The attempt at a solution

    See Figure

    I'm fairly certain the force I drew at point D isn't at a 90 degree angle, but if its not I can't find the perpendicular distance for the horizontal/vertical distances at the point D.

    This has been giving me a really big headache and alot of stress lately so some help would be greatly appreciated!
    Attached Thumbnails Attached Thumbnails 2 Force Members and Trusses! HELP!-trussq1.jpg   2 Force Members and Trusses! HELP!-trussq1attempt.jpg  
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