"Bill Pragnell" <bil### [at] hotmailcom> wrote:
> "Stephen" <mcavoys_AT_aolDOT.com> wrote:
> > "Bill Pragnell" <bil### [at] hotmailcom> wrote:
> > > Stephen <mca### [at] aolcom> wrote:
> > > > Fair point Bill. But Ed said "It should spin in about 12 hours or 24
> > > > hours or so."
> > >
> > > Which is not fast enough for significant centrifugal effects -
> >
> > Are you sure, are my calculations wrong?
>
> Um, I didn't check. Quick calculation of my own, assuming a torus minor diameter
> the same as the earth, which gives a major radius of about 6 earths (~77,000km),
> spinning once per 12 hours, I get a centripetal acceleration of about 1.6
> ms-2... ok, a bit more significant than I thought, that's about 1/6th of a g
> more on the inner surface and less on the outer surface.
>

Oops! I forgot to divide bt 9.81 and called m/s^2 g :-(


> Athletes from the inner provinces would trounce their opponents from the outer
> lands :)
>
> > > > Personally I prefer the Culture Orbitals. ;-)
> > >
> > > Me too. Mostly for the amenities :)
> >
> > And the snappy repartee. ;-)
>
> and let's not forget the parties!

If you can remember the parties then you wern't there. ;-)

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