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Homework Help: ANyone know how to draw a parallelogram/triangle to resolve force?

  1. Apr 29, 2012 #1
    ANyone know how to draw a parallelogram/triangle to resolve force??

    1. The problem statement, all variables and given/known data

    http://www.xtremepapers.com/papers/...and AS Level/Physics (9702)/9702_s04_qp_2.pdf

    question 1b



    2. Relevant equations



    3. The attempt at a solution
    I drew a triangle using a scale of 1cm=1N. I drew (at least I think I did) a decent sketch with the help of the protractor and ruler. For the resultant length i Just connected the two ends of the 8N and 6N lengths(which gave me a triangle). I measured the resultant which gave me 5.1cm, which with my scale is 5.1N. But my answers way off. Am i doing it right?
     
  2. jcsd
  3. Apr 29, 2012 #2

    ehild

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  4. Apr 30, 2012 #3
    Re: ANyone know how to draw a parallelogram/triangle to resolve force??

    I think my one was similar. Can you just sketch it out once, and tell me what you get? I think the mark scheme may be wrong.
     
  5. Apr 30, 2012 #4

    ehild

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    Re: ANyone know how to draw a parallelogram/triangle to resolve force??

    You connected the wrong points. Make a parallelogram of the vectors, and show your drawing.

    ehild
     
  6. May 1, 2012 #5
    Re: ANyone know how to draw a parallelogram/triangle to resolve force??

    Kk i used a parallelogram this time, and got 13N thanks.
     
  7. May 1, 2012 #6

    ehild

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    Re: ANyone know how to draw a parallelogram/triangle to resolve force??

    Splendid! It was the difference of the vectors what you got before.


    ehild
     
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