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AP Physics 1
6.6 Motion of Orbiting Satellites
IntermediateMCQProportional Analysis16.8k
Two separate diagrams showing a probe in a circular orbit around a moon. On the left, Moon 1 has mass M1 and a probe orbits at radius R1 with speed v1. On the right, Moon 2 has mass M2 = 4M1 and a probe orbits at radius R2 = 2R1 with speed v2. The orbits are shown as dashed circles around the central spheres.
Orbits of Probe 1 and Probe 2 around their respective moons.
A space agency launches two identical probes to study two different moons in a distant planetary system. Probe 1 enters a circular orbit of radius \(R_1\) around Moon 1, which has mass \(M_1\). Probe 2 enters a circular orbit of radius \(R_2 = 2R_1\) around Moon 2, which has mass \(M_2 = 4M_1\). If the orbital speed of Probe 1 is \(v_1\), what is the orbital speed of Probe 2?

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