Re: OT Poll: Does our solar system have 8 or 9 or 10 known planets?

news:e1m0fp$5lq$1@xxxxxxxxxxxxxxxxx by Dave:

"Robert J. Kolker" <nowhere@xxxxxxxxxxx> wrote in message
news:4a7df0Frq95kU2@xxxxxxxxxxxxxxxxx
Robin Levett wrote:



Nope. The mass ratio is 1:81;

Wrong. It is 1:6. A person weights 1/6 on the Moon what he does on
earth. The center of gravity lies outside both the Earth and the
Moon.

Take a deep breath Bob.

Mass of the earth is 5.97e24kg.
Mass of the moon is 7.35e22kg.

That looks a lot closer to 1:81 than 1:6 to me.

The weight of a person on the surface of the moon vs their weight on
the surface for the earth is dependent on two factors in addition to
the masses of those two bodies.


Distance from the center of mass and acceleration?



--
Ferrous Patella (Homo gerardii)
T.A., Philosophy Lab
University of Ediacara


Å vite hva man ikke vet,
er også en slags allvitenhet.

.

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