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AP Physics 1
2.9 Circular Motion
2.6 Gravitational Force
IntermediateMCQProportional AnalysisConceptual13.3k
A diagram shows a central planet labeled with mass M. Two concentric dashed circles represent the orbits of two satellites. The inner circle is labeled Orbit X and shows Satellite X at a distance r_X from the center. The outer circle is labeled Orbit Y and shows Satellite Y at a distance r_Y = 4r_X from the center.
Two satellites in circular orbits around a central planet of mass M.
Satellite X and Satellite Y are in uniform circular orbits around a planet of mass \(M\). Satellite Y has twice the mass of Satellite X (\(m_Y = 2m_X\)). The orbital radius of Satellite Y is four times the orbital radius of Satellite X (\(r_Y = 4r_X\)). What is the ratio \(v_Y/v_X\) of the orbital speeds of the two satellites?

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