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Statics and the cross product

  1. Nov 18, 2004 #1
    In the problem:
    A horizontal boom supporting the sign is of uniform construction and weighs 50 N. If the sign weighs 150 N, the tension in the supporting cable is?

    Could I use the cross product and if so how? The answer is 350 N.
     
  2. jcsd
  3. Nov 18, 2004 #2

    James R

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    Do you have a diagram? Is the cable at an angle, or is it vertical? Where's this sign you mention?
     
  4. Nov 18, 2004 #3
    [​IMG]
     
  5. Nov 19, 2004 #4

    cepheid

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    Hmmm....is that all the info? Do we have some lengths, or the angle of the cable from the horizontal?
     
  6. Nov 19, 2004 #5

    James R

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    The tension in the cable definitely depends on the angle it makes with the horizontal, so we need to know that to solve the problem.
     
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