5th Edition

ISBN: 9780136782490

Author: Walker

Publisher: PEARSON CO

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A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal for…

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Textbook Question

Chapter 12, Problem 61PCE

A dumbbell has a mass m on either end of a rod of length 2a. The center of the dumbbell is a distance r from the center of the Earth, and the dumbbell is aligned radially. If r ≫ a, show that the difference in the gravitational force exerted on the two masses by the earth is approximately 4GmM_Ea/r³. (Note: The difference in force causes a tension in the rod connecting the masses. We refer to this as a tidal force.) [Hint: Use the fact that 1/(r − a)² − 1/(r + a)² ~ 4a/r³ for r ≫ a.]

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Chapter 12, Problem 60PCE

Chapter 12, Problem 62PCE

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