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Urgent help! Angular Acceleration.

  1. Dec 6, 2008 #1
    1. The problem statement, all variables and given/known data

    [​IMG]

    2. Relevant equations

    Tangent Acceleration, Linear Acceleration

    3. The attempt at a solution

    I tried to made a free body diagram but i got confused with the inclined plane Im stuck there. Also with the Formulas for the accelerations...

    PLEASE SOMEONE HELP ME!
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 6, 2008 #2
    ok i've been thinking about this and i think it might be two questions in one.

    first, to analyze the linear motion of the center of the circle G. i would just treat the center as a particle, and use F=ma. draw out your FBD, use that 5-12-13 triangle instead of trig functions but in the same manner, that should get you the linear acceleration.

    the second part is where i am getting confused. does the center of a circle have a angular acceleration? because the first derivation of angular acceleration would be displacement, S=(theta)(radius), but here radius is equal to zero, and therefore we have no S and therefore, no angular acceleration...


    just an idea....
     
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