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Tension in support cable. Help

  1. Mar 12, 2007 #1
    Tension in support cable. Help!!

    A wrecking ball (weight = 4500 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3610 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°. Find (a) the tension in the support cable and (b) the magnitude of the force exerted on the lower end of the boom by the hinge at point P.

    I know I have to sum the torque about the hinge to solve for T, but I can't seem to get it right.

    I also do not know how to do part b.
  2. jcsd
  3. Mar 13, 2007 #2


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    Could you perhaps show the diagram?
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