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Radial Acceleration in cylindrical coordinates

  1. Apr 4, 2008 #1
    Hey guys,

    Been given this formula for radial acceleration, im not sure how they derived it. I have tried but the only forumla I know is a(radial) = v^2/r

    [tex]A_{r}[/tex] = [tex]\ddot{r}[/tex] - r[tex]\dot{\theta}^{2}[/tex]


    EDIT - should be minus not plus
     
    Last edited: Apr 4, 2008
  2. jcsd
  3. Apr 5, 2008 #2

    tiny-tim

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    Hi VooDoo! :smile:

    They differentiated r.(cosθ.x + sinθ.y), twice! :smile:
     
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