Re: Apparent weight

[Herb Schulz <herbs@interaccess.com>]

> Hi Leigh:
>
> Writing a long book is a time-consuming activity. What about about a
> sequnce of messages for those of us who certainly have something to learn
> from you in this thread? Little hints here and there are not sufficient.
> I applaude you when you say that centrifugal forces are real. How can
> be any doubt about this? But people avoid them because they present the
> problem --> "what is the cause"? How do you deal with this? Also elaborate
> on the "tidal" nature of your "microgravity".
>
>                                                   Ludwik Kowalski

Howdy,

What is the reaction force to the centrifugal force and what body does it
act upon?  Just curious.  I always find that writing Newton's second law as
F-ma=0 was equivalent to writing it as F=ma but leads to real problems in
students understanding of acceleration since you can always find a
reference frame where any given object has zero acceleration (it's own CM).

Good Luck,
Herb Schulz
(herbs@interaccess.com)

P.S. Leigh, thanks for putting together that data base of SNR's for Starry
Night.  What a neat program!