identical planets with the same mass as that of Earth are positioned in a circle such that any two adjacent planets are spaced L = 150 000 km apart. Due to gravity, the planets move in a uniform circular motion about a point O with speed v. Find v.

identical planets with the same mass as that of Earth are positioned in a circle such that any two adjacent planets are spaced L = 150 000 km apart. Due to gravity, the planets move in a uniform circular motion about a point O with speed v. Find v.

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter6: Some Methods In The Calculus Of Variations

Section: Chapter Questions

Problem 6.18P

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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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Six identical planets with the same mass as that of Earth are positioned in a circle such that any two adjacent planets are spaced L = 150 000 km apart. Due to gravity, the planets move in a uniform circular motion about a point O with speed v. Find v.

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