Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m(6380 kmkm).   Use the inverse-square law to find a height above Earth's surface at that the force of gravity on a shuttle is about 96 %% that at Earth's surface.

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Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m(6380 kmkm).
 
Use the inverse-square law to find a height above Earth's surface at that the force of gravity on a shuttle is about 96 %% that at Earth's surface.
 
 
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