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Homework Help: EASY speed of curve PROBLEM

  1. Nov 20, 2006 #1
    EASY speed of curve PROBLEM!!!!

    A race track curve has a radius of 100 m and is banked at an angle of 68 degrees. For what speed was the curve designed?


    ok this is what i got

    since tan angle = v^2/rg
    i got tan 68 = v^2/rg
    so tan 68 x rg = v^2
    but this gave me an answer far from the actual answer of 49.
    please help!
     
  2. jcsd
  3. Nov 20, 2006 #2
    [tex]v=\sqrt{980\tan68^\circ}\approx49.25[/tex]:wink:
     
  4. Nov 20, 2006 #3
    haha i had the calculator on radians
    thank you haha
     
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