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Homework Help: 3D Vector Forces

  1. Jan 17, 2009 #1
    I have attached a copy of the problem and an attempt at a solution. Any help would be greatly appreciated. I know the answers I need to get to but I cannot seem to figure out what I am doing wrong. Thanks

    btw the answers are:

    F3 = 9.58 kN
    Alpha= 15.5 degrees
    Beta = 143 degrees
    Gamma = 53.1 degrees

    I just noticed at the bottom of my work when I was computing the magnitude I put -10 instead of -1. Either way it does not affect the answers that I get.

    Attached Files:

  2. jcsd
  3. Jan 18, 2009 #2
    Ok so I figured out what my problem was..I had forgot that one or two of the directions were negative. Thanks anyways.
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