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Math Help - force vector prob

  1. #1
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    force vector prob

    I have attached a page from my text. The problem is 2-66.

    I have also attached what I have so far.

    It seems that angles \gamma and \beta are correct, according to the answer key in the back of the book.

    The book states that \alpha should be 90 degrees. This makes sense and I woul have said this from the beginning, since there are no forces acting in the x direction.

    However, the book states that F_1 is 500 lbs. So I have to account for the remaining force, right? I figured I could send it into the ground since the ground opposite reaction would cancel out the force in the x direction. Does that make sense?

    What am I missing?
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