On 29/7/2007 2:03 PM, Horace Heffner wrote: > > On Jul 29, 2007, at 10:55 AM, Harry Veeder wrote: > >> >> No, and here is an argument without stopping the Earth's rotation. >> Mount each supporting frame on its own turntable. A slight turn of >> each >> turntable will show that only the wheel with the braked released is >> rotating >> about its own centre. > > Harry, > > You might help your understanding a great deal if you read Newton's > laws and, whenever making (writing) a prediction about a physical > outcome, site which law is in effect and the source of any forces > involved to create the outcome. The process may at times change your > mind about your predictions.
I know enough about the subject to admit error when I have not made adequate use of Newton's laws of motion. Do you think the above prediction is not allowed by Newton's laws? > Newton's laws are here: > > http://en.wiktionary.org/wiki/Newton%27s_first_law > > It may also be useful to read and attempt to understand as much as > possible about momentum and angular momentum: > > http://en.wikipedia.org/wiki/Momentum > http://en.wikipedia.org/wiki/Angular_momentum > > > Horace Heffner > http://www.mtaonline.net/~hheffner/ Many years ago I took undergraduate physics. Unfortunately, the program was more like a course in applied mathematics than physics. Physics should have less math and more history and philosophy and more hands on work. Harry
