What is the formula for the value of acceleration due to gravity at height h from the surface of the earth when h < < R ??

Answers (1)

 The value of acceleration due to gravity at height h from the surface of the earth when h < < R  is given by

  g'=g(\frac{ R}{R+h})^2=g(1+\frac{h}{R})^{-2}

         So g'=g\left [ 1-\frac{2h}{R} \right ]

Where 

g=Value of acceleration due to gravity  at the surface of the earth

R= radius of the earth

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