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Corwyn_8
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01-23-2016, 09:14 AM

I haven't gotten all the way through it, but I did notice:

Quote:
"The ball therefore rotates about two different axes simultaneously."
Which would appear to violate Euler's rotation theorem which states that "any displacement of a rigid body such that a point on the rigid body remains fixed, is equivalent to a single rotation about some axis that runs through the fixed point.".

One could argue that the point is semantic, but I wouldn't expect such a fundamental mistake in a peer reviewed article.

Thank you kindly.
  
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