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Homework Help: Vector addition (please help, due tomorrow)

  1. Oct 30, 2008 #1
    1. The problem statement, all variables and given/known data
    Graphically add the following sets of vectors. (There is a group of 6 vectors labeled A-F. They have an assigned value and are at different angles, but the angle is not given)


    2. Relevant equations
    None?


    3. The attempt at a solution

    So my problem here is this. The problem I need help with is adding 3 vectors. The first is A, which has a value of 3.0. Then B, which is also 3.0 but at a 90 degree angle. And the third is E, which is 5.0 and at a 45 degree angle.

    I understand that you place them tip-to-tail and then add, but I'm not sure how to do it graphically? Do the angles play a role, or is my answer just 11? PLEASE HELP!
     
  2. jcsd
  3. Oct 30, 2008 #2
    Is it wanting the magnitude and direction of the resultant vector of A + B + E?
     
  4. Oct 30, 2008 #3
    It just says "Graphically add the following sets of vectors." I would think it would want the direction but I could be wrong.... But it doesn't give the angles (I had to use a protractor) and usually my book does if it wants direction.
     
  5. Oct 30, 2008 #4
    Well, if it wants you to graphically add them you can simply put the tail of one vector on the head of another vector and repeat for the third vector. Then, draw a line from the tail of the first vector to the head of the last vector. Since it only asks for the graphical addition I have to assume that's all it wants.
     
  6. Oct 30, 2008 #5

    LowlyPion

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    Homework Helper

    Your answer is definitely not 11.

    A vector pointing North? A vector pointing East? And 1 pointing North East?
     
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