g=g0(RR+h)2,R+h=Rg0g,g=GM(R+h)2,g=g_0(\frac{R}{R+h})^2,\\ R+h=R\sqrt{\frac{g_0}{g}},\\g=\frac{GM}{(R+h)^2},g=g0(R+hR)2,R+h=Rgg0,g=(R+h)2GM,
T=4π2(R+h)3GM=2πR+hg=2πRg.g0g,T=\sqrt{\frac{4\pi^2(R+h)^3}{GM}}=2\pi\sqrt{\frac{R+h}{g}}=2\pi\sqrt{\frac Rg. \sqrt{\frac{g_0}{g}}},T=GM4π2(R+h)3=2πgR+h=2πgR.gg0,
T≈90.2m.T\approx 90.2^m.T≈90.2m.
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