Tangential Acceleration

  1. How do you find the Magnitude of tangential acceleration if you have uniform circular motion? I know the formula for Tangential Acceleration; however I have no clue how to apply it to determine the Magnitude?
  2. jcsd
  3. Its just the magnitude of the vector. It should just be V^2/r.
  4. The formula in the previous post is incorrect (that's the magnitude of the *radial* component of the acceleration). What formula are you using for tangential acc?
  5. Doc Al

    Staff: Mentor

    Do you mean centripetal acceleration? If something is performing uniform circular motion, its tangential acceleration is zero. Or do you mean non-uniform circular motion, which will have a tangential component of acceleration?
  6. No, I mean tangential acceleration. That's probably the answer I'm looking for I just have to know how to express that the acceleration would be zero if it was uniform circular motion using words and one equation.
  7. Im suppose to use At=[dv/dt].
  8. Doc Al

    Staff: Mentor

    OK, where v is the speed, not the velocity vector. For uniform circular motion, dv/dt = 0.
  9. rcgldr

    rcgldr 7,695
    Homework Helper

    Tangental acceleration can still exist on a object traveling in a circular path. The centripetal force just needs to change with respect to speed2, so it always equals m |v|2 / r.

    The magnitude of tangental acceleration would be the magnitude of angular acceleration times r = |angular acceleration| x r.
    Last edited: Jun 16, 2008
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