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Homework Help: Weights, pulley's and a spring

  1. Mar 8, 2009 #1
    1. The problem statement, all variables and given/known data
    Am I heading in the right direction?
    If so i am lost now in finding the missing values for the unknown weights, a little nudge would be great. The work that i have attached is CLEANED up so it can be readable.


    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Mar 15, 2009 #2
    I finally was able to complete this problem.
    First i was going in the wrong direction using unit vectors. I found out that it was a simple force vector problem. Bottom line i was over thing and making it out to be more complicated then it really was, but it was comforting to find out that i was not the only one :-) But anyway I am going to attached my solution. The professor did not use angles in his solution as i did he just used the properties of find the angle sine=opp/hyp and cos=adj/hyp. I used tan to find the angles as you can see. The one that that confuses me is how precise is precise?
    Thank you


    I am new on here and i see that this would be a good place for practice.
     

    Attached Files:

    Last edited: Mar 15, 2009
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