An instrument package is projected vertically upward to collect data near the top of the Earth’s atmosphere (at an altitude of about 900 km). (a) What initial speed is required at the Earth’s surface for the package to reach this height? (b) What percentage of the escape speed is this initial speed?

An instrument package is projected vertically upward to collect data near the top of the Earth’s atmosphere (at an altitude of about 900 km). (a) What initial speed is required at the Earth’s surface for the package to reach this height? (b) What percentage of the escape speed is this initial speed?

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter9: Dynamics Of A System Of Particles

Section: Chapter Questions

Problem 9.63P

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Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.

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