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April 23, 2014

April 23, 2014

Posted by **Ruchee Thapa** on Friday, December 2, 2011 at 8:56am.

- Science -
**drwls**, Friday, December 2, 2011 at 9:40amThe Earth's radius is Re = 6357 km. A location 15,000 km above the surface would be

Re + 15,000 = 21,357 km

from the center.

Since the accleration of gravity, g, is proportional to 1/R^2, where R is the distance from the center of the earth, at that height

g = (6357/21,357)^2 * 9.8 m/s^2

= 0.87 m/s^2

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