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Homework Help: Determine the Magnitude of Force F

  1. Jul 7, 2008 #1
    1. The problem statement, all variables and given/known data

    Determine the magnitude of force F so that the resultant FR of the three forces is as small as possible


    2. Relevant equations

    Question 2-33.gif

    3. The attempt at a solution

    Need some help??

    Thanks,

    Nacha
     
  2. jcsd
  3. Jul 7, 2008 #2

    dynamicsolo

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    Homework Helper

    Do you know how to resolve vectors into components? The most direct way to deal with this is to find separately the x-components and y-components for each of the three vectors (calling the magnitude of the unknown vector F for now), then find the sums of the x- and y-components.

    You are asked to find the value of F that will make the magnitude of the vector sum smallest. The most direct way to do this requires calculus. Is your course calculus-based?
     
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