Quote:
Originally Posted by sjastro
Alex,
I am going to throw this one right back at you.
Explain where Mathis came up with the orbital equation v=(2*PI*r)/t.
While it looks logical, try differentiating the equation with respect to time and provide a physical interpretation of the resulting acceleration.
How is it possible this acceleration leads to a stable circular orbit?
Regards
Steven
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He is using a linear formula for speed and then thinks it represents circular motion. He most probably did not get past year 4 maths.
see
http://en.wikipedia.org/wiki/Circular_motion
You should always take the limit to the Planck Length never zero as that leads to absurdities like infinity.
my 2C
Bert