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Homework Help: Circular Motion and Oscillationshave been sick and am lost

  1. Oct 31, 2013 #1
    1. The problem statement, all variables and given/known data
    A particle begins at rest on a circular track and is subjected to a constant angular acceleration of magnitude α beginning when t=0s.(a) Show that the magnitudes of the tangential and centripetal accelerations of the particle are equal when

    t=(1/α )^(1/2)

    Independent of the radius of the circular track. (b) What is the angle that the total acceleration vector makes with the radial direction at this time?
  2. jcsd
  3. Oct 31, 2013 #2


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    Science Advisor
    Homework Helper

    hi yvette262! welcome to pf! :wink:

    Show us what you've tried and where you're stuck, and then we'll know how to help! :smile:

    ("constant angular acceleration of magnitude α" means θ'' = α)
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