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Finding tension acb

  1. Sep 20, 2014 #1
    For problem 2.53, they are asking us for the tension in cable ACB and the answer is 1213N.

    Now to my understanding to find tension ACB, I need to find tension CB and CA then find the resultant of them, However I know that is wrong because when I calculated tension CB I got the answer of 1213N.

    Now my question is, why is tension ACB = tension CB ?

    Thank you in advance.
    http://[Imgur](http://i.imgur.com/pOgJai9) [Broken] pOgJai9.jpg
    dZyjo54.jpg
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Sep 22, 2014 #2
    If the traction cable were not there, what would happen? Is the system stable? What difference would it make if the pulley were not frictionless?
     
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