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Tension of a rope

  1. Sep 12, 2011 #1
    1. The problem statement, all variables and given/known data
    attachment.php?attachmentid=38776&stc=1&d=1315827221.jpg


    2. Relevant equations



    3. The attempt at a solution
    I don't know how to find Tension (T).

    I think the Tension contains 2 parts.
    First part is the rod near the center, it exerts a force on P toward the center.
    Second part is on the other side of the rod, which exerts a force on P away from the center.
    Is the Tension equals the sum of the 2 force?
     

    Attached Files:

    Last edited: Sep 12, 2011
  2. jcsd
  3. Sep 12, 2011 #2

    BruceW

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    The picture doesn't come up on my screen for some reason.
     
  4. Sep 12, 2011 #3
    I have fixed the problem now
     
  5. Sep 12, 2011 #4

    BruceW

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    I see it now, thanks. I don't know why you called the problem 'tension of a rope', since it is tension in a rod...

    About your attempt: The tension is equal to just the force on one side, since the forces on either side are equal and opposite, their sum is zero. (Note: you must include the centrifugal force in the calculation).
     
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