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First condition of equilibrium problem help

  1. Nov 27, 2011 #1
    Anyone know how to solve this one?

    1. The problem statement, all variables and given/known data
    Determine weights w1 and w2 that cause the tension T in the horizontal cable to be 100 N.

    Here's the diagram:
    http://tinypic.com/m/f56cyb/2


    2. Relevant equations
    All I know is the component method but. . .I'm not sure how to apply it here.

    3. The attempt at a solution
    I really have no idea where to start, so please help!
     
  2. jcsd
  3. Nov 27, 2011 #2
    Since the whole cable setup is not in motion nor is it in impending motion, what must the tension in the cable that makes the 30 degree angle be?

    Once you decide on that, draw a free body diagram of the cable joint and perform the usual force balance in the x and y directions.
     
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