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Kinematics of particles

  1. Sep 15, 2009 #1
    1. The problem statement, all variables and given/known data

    The slotted arm OA forces the small pin to move in the fixed spiral guide defined by r=Kθ. Arm OA starts from rest at θ=π/4 and has a constant counterclockwise angular acceleration [tex]\ddot{theta}[/tex] =α. Determine the magnitude of the acceleration of the pin when θ=3π/4.

    Answer is a=10.76Kα

    any help is appreciated.

    3. The attempt at a solution

    I have no clue where to start.
  2. jcsd
  3. Sep 15, 2009 #2


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    Homework Helper

    Hi, amiv4. Start by reading your text book and studying the example problems. The PF rules state, you must list relevant equations yourself, and show your work; then someone might check your math.
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