How Does the Orbital Period P of Particles Moving Around

question 170

Multiple Choice

How does the orbital period P of particles moving around in the rings of Saturn depend on the distance r of the particles from the center of the planet?

• A) P² is proportional to r³.
• B) P is constant for all r because the rings move as a solid disk.
• C) P is proportional to 1/r²
• D) P increases directly with r.

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