The figure on the right shows a portion of the ring and moon system of Saturn. The inner edge of the Cassini division is defined by a 2:1 resonance with Mimas; that is, a particle at that distance orbits twice for every one orbit made by Mimas, and as a result, it feels an unbalanced gravitational tug outward. If Mimas has an orbital semimajor axis of 185,539 km, what is the semimajor axis of the inner edge of the Cassini division in km?

The figure on the right shows a portion of the ring and moon system of Saturn. The inner edge of the Cassini division is defined by a 2:1 resonance with Mimas; that is, a particle at that distance orbits twice for every one orbit made by Mimas, and as a result, it feels an unbalanced gravitational tug outward. If Mimas has an orbital semimajor axis of 185,539 km, what is the semimajor axis of the inner edge of the Cassini division in km?

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