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Non uniform circular acceleration

  1. Aug 15, 2012 #1
    1. The problem statement, all variables and given/known data
    A car is moving with a speed of 30m/s on a circular path of radius 500m. It's speed is increasing at a rate of 2m/s2. What is the acceleration of the car.


    2. Relevant equations
    That is my problem.


    3. The attempt at a solution
    Well i know equations for uniform circular motion but this is just beyond me.
     
  2. jcsd
  3. Aug 15, 2012 #2

    Doc Al

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    Hint: You are given the tangential component of the acceleration. What's the radial component?
     
  4. Aug 15, 2012 #3

    CWatters

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    An object is accelerating if it's speed or direction is changing. Your car appears to be subject to two acceleration vectors. You know how to add two vectors?

    Edit: Deleted a bit of this reply as otherwise too easy.
     
  5. Aug 15, 2012 #4
    oh
    that was surprisingly easy
    i was messing up with vector addition
    thanks anyways.
     
  6. Aug 15, 2012 #5

    CWatters

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    Just to play the devil....

    What about gravity? Is it really three vectors :-)
     
  7. Aug 15, 2012 #6

    Doc Al

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    Why do you think that would matter? (It's on a circular path.)
     
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