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Drag coefficient

  1. Aug 14, 2009 #1
    I am wondering how I could calculate the drag coefficient of a regular 1.25L coke bottle. I used it as a submarine, and found its acceleration, compared to what its acceleration 'should' have been'. I am comparing the missing force between the theoretical and achieved accelerations to viscous drag force, but I can't find the drag coefficient for a 1.25L plastic bottle.
  2. jcsd
  3. Aug 14, 2009 #2
    You must be ignoring buoyancy
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