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How to find the resultant?

  1. Nov 1, 2009 #1
    Forces of 67.2lb and 57.3lb are exerted at an angle of 47 degrees. What is their resultant?
     
  2. jcsd
  3. Nov 1, 2009 #2

    Andrew Mason

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    Show us what you have done first. How do you add these forces?

    AM
     
  4. Nov 1, 2009 #3
    well i know you use c2=a2+b2-2ab cos C. but then im not sure what to do next.
     
  5. Nov 1, 2009 #4

    Andrew Mason

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    Draw a vector diagram. Place one vector along the x axis. The other 47 degrees from the axis with its tail on the head of the first. Draw the resultant. What is the component of the second vector in the y direction? What is its component in the x direction? Add the x components to get the x component of the resultant. What is the y component of the resultant?

    AM
     
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