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Homework Help: Magnitude of tension force using moment

  1. Mar 13, 2012 #1
    1. The problem statement, all variables and given/known data
    a uniform steel ring 60" in diameter and weighing 600 lbs is lifted by three cables each 50" long attached at points A (90*) B (90*) C (120*) with a radius of 30". compute the magnitude of tension force in each cable

    2. Relevant equations
    all moment equations

    3. The attempt at a solution
    first two cables have a force of 250 lbs and last one has 100 lbs. more of an incorrect guess figured since two have the same angle they would be the same. since there is almost no acceleration (besides gravity) i dont think i could solve it with my equation. it also wouldnt help because i need tension in each string not one tension.

    note: degrees=*
    Last edited: Mar 13, 2012
  2. jcsd
  3. Mar 14, 2012 #2


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    welcome to pf!

    hi kleeds! welcome to pf! :smile:

    i don't understand what the tops or bottoms of the cables are attached to, or what those angles are :confused:
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