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Homework Help: How do I solve this problem? Finding the resultant vector

  1. Feb 9, 2012 #1
    1. The problem statement, all variables and given/known data

    Starting at the origin of coordinates, the following displacements are made in the xy-plane (that is, the displacements are coplanar): 60 mm in the +y-direction, 30 mm in the Ñx-direction, 40 mm at 150°, and 50 mm at 240°. Find the resultant displacement both graphically and algebraically.

    2. Relevant equations

    Addition of vector components

    3. The attempt at a solution

    I tried to break it into components:
    Dx= -25

    Ay=60, By=0, Cy=20, Dy=-43.3

    However The answer is 97mm at 158°
    How did they get this answer?

    THANKS for your help!
  2. jcsd
  3. Feb 9, 2012 #2


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    welcome to pf!

    hi a321! welcome to pf! :smile:

    shouldn't Bx be minus 30 ? :wink:
  4. Feb 9, 2012 #3
    Oh wow! Yes you are right! thanks so much!
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