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Anti-centrifugal effect

  1. Mar 8, 2010 #1
    I have a pot with water and some large particles lying on the bottom. When I stirr the water in a circular motion and then let the particles settle, they all gather in the center of the pot. Why is that so?
    Last edited: Mar 8, 2010
  2. jcsd
  3. Mar 8, 2010 #2


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  4. Mar 8, 2010 #3
    Thanks for the solution!

    Btw, that reminds me of another simpler effect: Apparently when a van with helium balloons accelerates, the ballons move to the front :) Bouyancy I suppose.
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