Of the facts listed below, three contribute to the unusual 3-to-2 spin-orbit coupling of Mercury's motion. Which one does NOT contribute?
A)The gravitational attraction between two masses decreases as the distance between the two masses increases.
B)Mercury's orbit is inclined at an unusually large angle to the ecliptic.
C)Mercury's orbit has an unusually large eccentricity.
D)Mercury is slightly oblong rather than perfectly round.

Question

Quizplus · Accepted Answer

Mercury's large orbital eccentricity and its oblong shape contribute to its unique spin-orbit coupling, but its inclination to the ecliptic does not directly affect this phenomenon. The gravitational principle (A) is a fundamental concept that applies universally, not specifically influencing Mercury's spin-orbit coupling in a unique way compared to other factors.

Of the Facts Listed Below, Three Contribute to the Unusual