The Roche limit tells us about the point on a rotating planet where the gravitational force at the equator is just equal to the necessary centripetal force needed for rotation. Assuming the planet to be a uniform sphere of density 5520 kg/m3, find the shortest period of rotation possible before exceeding the Roche limit G = 6.67* 10-11 N · m2/kg2) .
A) None of the following.
B) 50 min
C) 150 min
D) 48 min
E) 85 min
Correct Answer:
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