Radial Acceleration in cylindrical coordinates

  • Thread starter VooDoo
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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:

Answers and Replies

tiny-tim
Science Advisor
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Hi VooDoo! :smile:

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

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