Conceptual Idea: “According to Newton, Kepler's 3rd Law (P2 = D3) should be modified to read M+m = D3/P2 where M+m is mass in units of Sun+Earth mass, D is the orbital semi-major axis in astronomical units (AU), and P the time for one orbital revolution in Earth years." If one were trying to measure the mass of the Sun, MS, by observing a planet of mass mP orbiting the Sun, why could this equation be used to get a good estimate of MS? If one were trying to measure the mass of Jupiter, MJ, by observing the moon Ganymede of mass mG orbiting Jupiter, why could this equation be used to get a good estimate of MJ?
Conceptual Idea: “According to Newton, Kepler's 3rd Law (P2 = D3) should be modified to read M+m = D3/P2 where M+m is mass in units of Sun+Earth mass, D is the orbital semi-major axis in astronomical units (AU), and P the time for one orbital revolution in Earth years." If one were trying to measure the mass of the Sun, MS, by observing a planet of mass mP orbiting the Sun, why could this equation be used to get a good estimate of MS? If one were trying to measure the mass of Jupiter, MJ, by observing the moon Ganymede of mass mG orbiting Jupiter, why could this equation be used to get a good estimate of MJ?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom
Section: Chapter Questions
Problem 21P: Comet Halley (Fig. P11.21) approaches the Sun to within 0.570 AU, and its orbital period is 75.6 yr....
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