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Physics/Circular Motion


Valeri wrote at 2013-02-03 15:46:11
I think the answer is completely wrong; the centripetal acceleration is actually constant.

Letís consider first the tire rotating around non-moving axis with constant rate (as if you lifted a car and started to rotate the tire). Obviously centripetal acceleration is constant. Then just add straightforward movement with constant speed that is equal to the speed of the tire at thread point. This constant speed movement do not change the acceleration. But entire movement now is the same as set up in the question!


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James J. Kovalcin


I am teaching or have taught AP physics B and C [calculus based mechanics & electricity and magnetism] as well as Lab Physics for college bound students. I have a BS in Physics from the University of Pittsburgh and a Master of Arts in Teaching from same. I have been teaching physics for 34 years. I am constantly updating my skills and have a particular interest in modern physics topics.

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