A Planet Has Mass M_P and Radius R_P

question 62

Multiple Choice

A planet has mass m_P and radius R_P. Suppose a rod of uniform diameter and length R_P extends vertically from the surface of the planet. Where is the center of gravity of the rod as measured from the surface of the planet? The mass of the rod is much less than the mass of the planet.

• A) 0
• B) R_P/3
• C) 2R_P/5
• D) R_P/2
• E) 3R_P/4

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Definitions:

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Relating to the desire to promote the welfare of others, usually expressed especially by the generous donation of money to good causes.

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Predictions about the results or consequences of events in the future.

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Predictive analyses that utilize historical data to project future trends, patterns, or values over time.