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Newton's bucket

  1. Sep 30, 2014 #1
    Is there a better way to tie the bucket than single knot on the handle? Or type of rope to use...that would increase speed of the spin? Mine just don't spin that fast at all.. Plastic bucket.. The concave is quite small compared to some I've seen done before.. Any better way to set it up?
  2. jcsd
  3. Oct 1, 2014 #2


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    Is it spinning long enough for the friction to get the water turning? You could try a bigger bucket. It won't need to spin as fast to get a big concave.
  4. Oct 2, 2014 #3


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    A very long rope will allow spinning to continue for longer - to allow the paraboloid shape to form and for other small perturbations to die out.

    An old record player turntable, set to 78rpm is good - if you can find one.
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