Question

if acceleration due to gravity at distance d from centre of earth is A then value at distance d above surface of earth

Answer 1

$$\begin{gathered} \mathrm{Variation}\mathrm{of}\mathrm{acceleration}\mathrm{due}\mathrm{to}\mathrm{gravity}\mathrm{with}\mathrm{altitude}: \\ \frac{\mathrm{g}\text{'}}{\mathrm{g}}={\left[\frac{\mathrm{R}}{\mathrm{R}+\mathrm{h}}\right]}^2 \\ \mathrm{g}\text{'}=\mathbf{A}{\left[\frac{\mathbf{d}}{\mathbf{R}\mathbf{+}\mathbf{d}}\right]}^{\mathbf{2}} \\ \mathbf{where} \\ \mathbf{R}\mathbf{=}\mathbf{Radius}\mathbf{}\mathbf{of}\mathbf{}\mathbf{earth} \end{gathered}$$