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March 1, 2015

Posted by **kelly** on Thursday, March 3, 2011 at 9:33pm.

also, along the same lines,

A typical shuttle altitude is 220 km. Calculate the value of g at this altitude.

The the mass of the Earth = 5.98 x 10^24 kg and the radius of the Earth is 6.37 x 10^6 m.

- physics -
**drwls**, Thursday, March 3, 2011 at 11:57pmA) If R (measured from the center of the earth) increases by a factor of 4, as in this case, g gets multiplied by 1/16.

B) At 220 km altitude, R becomes

6370 km + 220 km = 6590 km.

g gets multiplied by (6370/6590)^2 = 0.934

For the actual value of g at those altitudes, multiply those factors by 9.81 m/s^2.

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