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Homework Help: Resultant force from three forces.

  1. Aug 28, 2012 #1
    1. The problem statement, all variables and given/known data
    I will refer to this picture for the problem.
    I have to find the resultant of the three force vectors. I know all except F1 and theta. I am given it for this problem to find the resultant. F1=510N and theta=20 degrees.

    2. Relevant equations
    Each theta is the degrees from positive x axis.

    3. The attempt at a solution
  2. jcsd
  3. Aug 28, 2012 #2


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    Staff Emeritus
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    Welcome to Physics Forums.

    For the 600 N force, the angle is not 150°. Look carefully at the figure again.
  4. Aug 28, 2012 #3
    The angle for 600N should be 4/5 for the x direction and 3/5 for the y direction. Now how do I find the angle? Thats the next part.

    Edit: Nevermind. I got it. Thank you
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