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Equilibrium and tension in elastic strings

  1. Apr 2, 2014 #1
    1. The problem statement, all variables and given/known data
    problem attached

    2. Relevant equations



    3. The attempt at a solution
    well, there is pretty much nothing i can write here, i couldn't solve it because this is the first time i face a problem like that , i have some problems understanding it though
    1-if we considered the tension a force that make a moment , (eg tension in PC ) where will be that force so i can take a distance will it be at P or C ?
    2- in other problems of equilibrium , when i take the distance , i take the distance to pivot ( in this one A ) but in this one , in the marking scheme , he took the distance to AB , and not the point A , why?
    3- he took the force of tension in the horizontal string to have a moment and when he mentioned the distance , it was the distance to the point A and not the vertical AB why?
     
  2. jcsd
  3. Apr 3, 2014 #2
    Never mind.. a friend saw the question and answered me
    Thanks
     
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