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A planet has mass, M, and radius R, If the universal gravitational constant is G,...

Physics
WAEC 2023

A planet has mass, M, and radius R, If the universal gravitational constant is G, what is the expression for the escape velocity of an object on the planet?

  • A. \(\frac{\sqrt{GR}}{2}\)
  • B. \(\frac{\sqrt{2GM}}{R}\)
  • C. \(\frac{\sqrt{2G}}{R}\)
  • D. \(\frac{\sqrt{GM}}{R}\)
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Correct Answer: Option B
Explanation

The expression for the escape velocity \(v_e\) of an object from a planet of mass M and radius R using the universal gravitational constant G is:


\(v_e = \frac{\sqrt{2GM}}{R}\)
 


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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
NECO June/July 2024 - Get offline past questions & answers - Download objective & theory, all in one app 48789
Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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