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Gravitational Law and Planetary Motion

  • Richard K. Cooper
  • Claudio Pellegrini

Abstract

By 1666 Newton and other physicists had found that the force that a particle of mass M produces on another particle of mass m is
$$F = - G\frac{{mM}}{{{r^2}}}\hat r$$
(3.1)
where r is the distance between the two masses, and \(\hat r\) is the unit vector pointing from M to m. The force is attractive. The gravitational constant G is
$$G = (3.3726\pm 0.0005) \times {10^{ - 11}}N{m^2}/k{g^2}$$
(3.2)

Keywords

Angular Momentum Impact Parameter Gravitational Potential Circular Orbit Semimajor Axis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1999

Authors and Affiliations

  • Richard K. Cooper
    • 1
  • Claudio Pellegrini
    • 2
  1. 1.Formerly of Los Alamos National LaboratoryLos AlamosUSA
  2. 2.University of California at Los AngelesLos AngelesUSA

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