GM(R+h)\sqrt{\frac{\mathrm{GM}}{(\mathrm{R}+\mathrm{h})}}(R+h)GM
GM(a+h)2\sqrt{\frac{G M}{(a+h)^{2}}}(a+h)2GM
GM(a+h)2\frac{\sqrt{\mathrm{GM}}}{(a+h)^{2}}(a+h)2GM
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