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AP Physics 1
2.6 Gravitational Force
IntermediateMCQProportional Analysis19.3k
A diagram showing two spheres. The first sphere is labeled Initial State with radius R and mass M. The second sphere is smaller, labeled Final State with radius R/2 and mass M. Arrows point toward the center of each sphere from the surface, labeled g_0 and g_new respectively.
Initial and final states of a contracting planet with constant mass.
A hypothetical planet is observed to have an initial mass M and an initial radius R, resulting in a gravitational field strength of g_0 at its surface. Due to a unique geological event, the planet contracts such that its radius becomes R/2 while its total mass M remains unchanged. What is the new gravitational field strength at the surface of the planet?

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