On Mon, 22 Aug 2005 20:07:48 -0700, "Starlord" <starlord@xxxxxxxxxxx>
>Ok, below is a question sent to me from one of the members of the SIAR:
>"I have a small quandary. I've assigned my students to look up
>some basic info on the planets via the web. Then I tried to create
>the answer key, and found VERY contradictory info regarding
>Mercury from assorted, reputable sources. It seems that online
>info indicates Mercury's surface gravity is 0.28 G, 0.33 G, or
>0.38 G (virtually identical to Mars).
>Do you have some info on this? Is there a solid, definitive answer?"
>What you all say?
Lang gives a value of 3.7 m/s^2, or 0.38G. You can test this, using
A = Mp / Rp^2 * Ae
(Mp, Rp are mass and radius relative to Earth, Ae is Earth's gravity)
A = 0.05527 / 0.382^2 * 9.8 m/s^2 = 3.71 m/s^2 = 0.38G
Chris L Peterson