Suppose the moon of a planet has a mass of 1/93th the mass of the planet it is orbiting (note: the moons shown above actually are even a smaller fraction than that!). What is the ratio of the force the moon applies to the planet compared to the force the planet applies to the moon? (Express your answer as a number-don't enter anything like A:B or A/B, just the single number you get by dividing A by B.)
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According to Newton's third law of motion,
Magnitude of Force applied by moon to the planet = Magnitude of force applied by planet to the moon = (Gmpmm)/r2
Only direction will be different.
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