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Statics problem. Cable with distributed load

  1. Nov 1, 2016 #1
    20161101_101911.jpg 1. The problem statement, all variables and given/known data
    can someone please help and explain to me how to do this problem? all the data is in the picture above.

    2. Relevant equations
    i am not entirely sure which equations i should use. i know one possible equation is T=((T_o)^(2)+(wy)^(2))^(1/2)

    3. The attempt at a solution
    with the one equation that i know, i can say that point 1 is not the bottom of the parabola.
    past that i need help



    Any help would be appreciated
    i have been stuck for about a day and a half and just dont know where to start.

    Thank you so much
     
  2. jcsd
  3. Nov 2, 2016 #2

    CWatters

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    Homework Helper

    I haven't tried to solve it all (not sure I can) but try drawing a free body diagram for the rope showing the horizontal forces. I think it's possible to work out the angle the rope makes at the bottom if that helps.
     
  4. Nov 3, 2016 #3
    You know the forces at the ends of the cable. You know those forces are tangential to the cable ends. You know the drag. That makes 3 forces. If they are in equilibrium they must all meet at one point. You don't have enough information about the cable self-weight to take account of that. Can you do it graphically with a triangle of forces?
     
  5. Nov 3, 2016 #4
    thanks both of you for the help. my proffessor just walked through the derivation today in class. . . I don't know why he assiNed the problem so early. . .
    thanks again
     
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