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Give the expression for acceleration due...

Give the expression for acceleration due to gravity at an altitude above the surface of the Earth.

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`g=g(1-(2h)/R)"for " h "< <"R and g =(g)/(1+(h)/(R))^(2)`
where h - altitude , R - radius of the earth, g-acceleration due to gravity on the surface of the earth , g.-acceleration due to an altitude.
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