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Find the relationship between them

  1. Feb 11, 2010 #1
    1. The problem statement, all variables and given/known data

    The five ropes in the picture can withstand 1500n each, how heavy can w be without breaking any?

    2. Relevant equations

    3. The attempt at a solution
    First naming the tensions on the rope t1,t2,t3,t4,t5
    and find the relationship between them, like t1 = 2t2
    but i dont understand the picture....
    can anyone help me to understand which rope is holding which rollers?

    Attached Files:

    • 1.jpg
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  2. jcsd
  3. Feb 11, 2010 #2


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    Science Advisor
    Homework Helper

    Hi 385sk117! :smile:

    If a rope ends in a blob in the middle of a pulley, then it's ending there, and supporting the wight of that pulley

    So, calling the pulleys A B C and D from the left, the first string starts at the ceiling and goes round A and B and supports C, the other string starts at the weight W and goes round C and D and ends at the ceiling. :wink:
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