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Homework Help: Centripital Acceleration

  1. Sep 28, 2011 #1
    1. The problem statement, all variables and given/known data
    You are running at 4.5 m/s around a circle 12m in diameter. Is the centripital acceleration perceptible?

    2. Relevant equations

    3. The attempt at a solution
    I know that the centripital acceleration is 1.7m/s^2 (4.5^2/12). What I don't know is what it means for centripital acceleration to be perceptible. Can anyone help me/ explain what this means?
  2. jcsd
  3. Sep 28, 2011 #2
    Ey yo, waddap.

    I'm not a native English speaker, and I'm learning physics in my own language, so the question is unfamiliar to me, BUT I think I can help.

    Perceptible.. To be perceived, experienced, felt.

    Do you feel the acceleration? Yeah, you sure do. The acceleration vector in circle motion, as long as the orbital acceleration is constant, which it is in your case, points towards the center of the circle. So the object (you) will feel it pushing you the other way, I.E. 180 degrees from the center of the circle. Much as when you're driving in a roundabout. Yeah, the centripetal acceleration is perceptible.

    That's my interpretation of the question.
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