You drill a hole right through the center of a spherical planet of radius R and mass M, and drop an object into it. How long does the object take to reach the opposite surface. Express your answer only in terms of M, R and the universal gravitational constant G.
You drill a hole right through the center of a spherical planet of radius R and mass M, and drop an object into it. How long does the object take to reach the opposite surface. Express your answer only in terms of M, R and the universal gravitational constant G.
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