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Homework Help: Solids and Structures - Vector question

  1. Jan 16, 2010 #1
    1. The problem statement, all variables and given/known data

    The rope BC exerts an 800 N force F on the bar
    AB at B. Determine the vector components of F
    parallel to the bar.


    2. Relevant equations

    I already know how to complete dot product (e.g. a.b), cross product (e.g. axb) and understand the basic principles of these ideas but don't know how to use these within the question asked to get the answer.

    3. The attempt at a solution

    I have already been given the solution to the question but all my workings that I have done so far have not produced the correct answer. The answer is Ans: -396i –476j – 79k N
  2. jcsd
  3. Jan 19, 2010 #2


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    Science Advisor
    Homework Helper

    J.Halliwell: The given answer is correct. You must list relevant equations yourself, and show your attempt(s); and then someone might check your math.
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