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Launching into Orbit

Difficulty: 7/10 Apr 7 – Apr 13, 2026 1 submission(s) by astrosander

A satellite of mass $m$ is launched vertically from the surface of the Earth (radius $R$, mass $M$). At what minimum speed must it be launched so that it enters a circular orbit at height $h = R$ above the surface? Express your answer in terms of $G$, $M$, $R$.

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