John Smith I wrote:

...
However, if I spun up the moon to revolve once ever 48 hours, that would
NOT make use of the moons spin valid in equations ... even if I
expressed it in equations like: moon-speed = (earth-speed * 2)

Something, or some effect, unknown to us belongs in those equations!
Sheer logic provides the proof ...

JS

Another thing, as I get older, NOTHING gets better ...

Change the above: "moon_speed = (earth_speed * 2)"
to:
moon_speed = (earth_speed/2)

I hate those dyslexic slips ... :-(

JS