Q.

The value of g is[[1]] at an altitude equal to the radius of the Earth.


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Detailed Solution

The value of g is 9.8m/s2   at an altitude equal to the radius of the Earth.
The letter 'g' represents the gravitational acceleration exerted by the Earth on anybody. If the distance from the Earth's centre is 6.38x106 m (a typical earth radius value), g is calculated to be 9.8 m/s2. The height above the Earth's surface has been chosen to find gravity at that same height.
 
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The value of g is[[1]] at an altitude equal to the radius of the Earth.