Re: question for Ricky

But since you're URL crazy... here's a nice one:

http://www.newton.dep.anl.gov/askasci/phy00/phy00305.htm

Let me see if it passes the "sniff test".... hmmm....

US Department of Energy
University of Chicago
Illinois Central College
Argonne National Laboratory

Yeah.... crappy credentials.

OK... try this. Pull out your old physics text from college. Oh wait...
silly me... you don't HAVE a physics text from college.

Well.... if you did, it would probably be "Halliday & Resnick" (either I or
II)... probably one of the best texts on the subject and widely used in
academia. Go to the section on the equations of motion in an fixed frame of
reference. Now try to find ANY reference to "centrifugal" force or
acceleration. Damn... not there, is it? Hundreds of references to the
"centripetal" acceleration and force.. but not ONE regarding "centrifugal".
Wonder why the HECK that is????

While you're digging through the text... there's a REALLY good section on
mechanics and translation of motion. Check out the examples where they have
a rotary drive coupled to a mass-slider. Kinda looks like a crankshaft and
piston, doesn't it? What a COINCIDENCE! Now, if you can follow the VERY
confusing FRESHMAN level physics text, you'll see that CENTRIPETAL (and
centrifugal) acceleration is never ever mentioned. Not once! Gee.. wonder
why THAT is?? But you WILL see where they take the equations of motion for
a circle, run through the trig to correlate that to the equation of motion
for the slider (piston)... and then generate the derivatives to yield the
velocity and acceleration equations. What a novel concept! Clever
bastards.. eh?

I would also direct you to the section where they talk about free body
diagrams and how to evaluate forces, reactions, and the application of
alternate forces in order to alter the direction of the resultant force
vector....... but I know that I was probably pushing my luck when I even
asked you to read.

Giz




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