Phobos is the closer of Mars’ two small moons, orbiting at 9400 km from the center of Mars, a planet of mass 6.4 × 10^23 kg. What is Phobos’ orbital period? How does this compare to the length of the Martian day, which is just shy of 25 hours?
Added by Kacia G.
Step 1
The formula for Kepler's third law is T^2 = k*r^3, where T is the period of the orbit, r is the distance from the center of the planet to the moon, and k is the gravitational constant of proportionality. We can rearrange this formula to solve for T: T = Show more…
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