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Homework Help: Engineering mechanics question

  1. Oct 24, 2014 #1
    1. The problem statement, all variables and given/known data
    Two cables are tied together at C as shown below. Knowing that the maximum tension in each cable is 800N, determine:
    a) the force in P that can be applied on C
    b) The corresponding value of a
    Link to diagram

    2. Relevant equations
    sine law

    3. The attempt at a solution
    So basically I drew a FBD, and realized that you can have a max of 800N in each rope. However, what I'm stuck on is trying to rearrange the diagram so I can solve it using the sine law. It seems I'm always having two unknown angles and one unknown side.I need some help with trying to decipher the force triangle.
  2. jcsd
  3. Oct 24, 2014 #2
    Who says you have to use the sine law?

  4. Oct 24, 2014 #3


    User Avatar

    Staff: Mentor

    You could first resolve all forces into their vertical and horizontal components ....
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