A 2.50-kg metallic ball at rest is being pulled by a strange magnetic field of a comet. The force exerted by the comet (in newtons) is given by the function F (r) = –kre-r, where: r: Distance from the comet's surface to the metallic ball, in meters. k =8.00 N m2 a = 2.00 m 1 The metallic ball starts at a distant enough position from the comet such that the force is zero, then starts moving towards the comet. 1. What is the potential function U (r) of the comet? Use the condition U (ro) = lim, 00 U (r) = 0. 2. What is the metallic ball's speed (in m/s) once the steel ball is one meter above the comet? Justify your answer using your rationale and equations used.

A 2.50-kg metallic ball at rest is being pulled by a strange magnetic field of a comet. The force exerted by the comet (in newtons) is given by the function F (r) = –kre-r, where: r: Distance from the comet's surface to the metallic ball, in meters. k =8.00 N m2 a = 2.00 m 1 The metallic ball starts at a distant enough position from the comet such that the force is zero, then starts moving towards the comet. 1. What is the potential function U (r) of the comet? Use the condition U (ro) = lim, 00 U (r) = 0. 2. What is the metallic ball's speed (in m/s) once the steel ball is one meter above the comet? Justify your answer using your rationale and equations used.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter5: Relativity

Section: Chapter Questions

Problem 74AP: Unreasonable Results (a) Find the value of required for the following situation. An earthbound...

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