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Quick question

  1. Oct 10, 2003 #1
    how would i solve this?

    "Two vectors, F and G, act concurrently and simultaneously on a particle. If F=20m at 30 degrees and the resultant, R, of the vectors is 50m at 45 degrees, the angle of force G is"?

    thanks for making me feel stupid :D
  2. jcsd
  3. Oct 11, 2003 #2
    cough ?
  4. Oct 12, 2003 #3
    this is the right forum, no?
  5. Oct 12, 2003 #4


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    Science Advisor

    You close your post with "thanks for making me feel stupid" and then are suprised no one wants to respond? Believe me, we are not responsible for how you feel!

    Did you read "Read this before posting" before posting?

    Since we don't want to make you feel stupid, we ask that you make some effort and show us what you have done- so that we will know that we are not just doing your homework for you and also so that we will have a better idea of what kind of help you need.

    I know at least two very different methods of solving this. I DO NOT know which is appropriate for you.
  6. Oct 12, 2003 #5
    im sorry for misleading you guys, i didnt really think you would make me feel stupid, but that was just my way of trying to "break the ice"

    i dont really understand the problem, i cant make a picture of what they are expressing, if you could show me a pictue of the problem, i think ill be able to solve it

    the reason I ask, is because i've got an exam over some general physics, and this is a example problem the teacher gave me, and i didnt know where to start

  7. Oct 12, 2003 #6
    Draw an xy coordinate system.
    Label the origin as O.
    Mark a point F, so that:
    - the line OF is at an angle of 30° WRT the x-axis.
    - the distance OF is 20.
    Mark another point R, so that
    - the line OR is at an angle of 45° WRT the x-axis.
    - the distance OR is 50.
    BTW, it's convention to have angles counter-clockwise.

    They want you to find the point G, so that OFRG is a parallelogram. They want to know the angle of the line OG WRT the x-axis.

  8. Oct 12, 2003 #7
    thanks alot, very helpful
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