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AP Physics 1
2.6 Gravitational Force
IntermediateMCQProportional Analysis21k
Two circular planets side-by-side. Planet A is smaller, labeled with mass M and radius R. Planet B is larger, labeled with mass 3M and radius 2R. Dotted lines indicate the radius from the center to the surface of each planet.
Comparison of the mass and radius for Planet A and Planet B.
An explorer is comparing the physical characteristics of two newly discovered planets. Planet A has mass \(M_A\) and radius \(R_A\), resulting in a surface gravitational field strength of \(g_A\). Planet B has three times the mass of Planet A and twice the radius of Planet A. Which of the following is the correct expression for the gravitational field strength at the surface of Planet B?

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