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Homework Help: Tension and Pulleys

  1. Sep 7, 2011 #1
    1. The problem statement, all variables and given/known data
    What is the tension T? The pulley is massless and frictionless.
    m1=661 g, w2=5 N, g=9.8 m/s2
    Picture attached



    2. Relevant equations
    T=w1+w2 ??


    3. The attempt at a solution
    First of all, I converted 661 g into kg. Next I multiplied that by g. I added that value to the 5N and I thought that was the T which was wrong.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     

    Attached Files:

  2. jcsd
  3. Sep 7, 2011 #2
    If you draw a free-body diagram you don't have to think as hard IMO. See the attached.
     

    Attached Files:

  4. Sep 7, 2011 #3
    Where did you get the 2T' from?
     
  5. Sep 7, 2011 #4
    I drew a free-body diagram for both masses. The tension T will not be the same as the tension in the other rope. Do the two free-body diagrams I drew make sense?
     
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