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September 2, 2014

September 2, 2014

Posted by **Lorie** on Monday, April 1, 2013 at 1:51pm.

- Math -
**Steve**, Monday, April 1, 2013 at 3:30pmsince F = GMm/r^2

and we are changing only r, then if we change r by a factor of k, F changes by a factor of 1/k^2

6,404,000/6,378,000 = 1.0040765, so

F changes by a factor of 1/1.0081696 = 0.992

so, F = 0.992 * 9.8 = 9.72 m/s^2

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