Universal Gravitation and Keplers Laws

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Universal Gravitation and Keplers Laws
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Practice

• Click on the planet to go to a practice page.
  Scroll down and try the problems found here.

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Keplers Laws of Planetary Motion

• 1st Law (The Law of Ellipses) The path of the
  planets about the sun are elliptical in shape,
  with the center of the sun being located at one
  focus.
• 2nd Law (The Law of Equal Areashttp//www.glenbro
  ok.k12.il.us/GBSSCI/PHYS/mmedia/circmot/ksl.html)
  An imaginary line drawn from the center of the
  sun to the center of the planet will sweep out
  equal areas in equal intervals of time.
• 3rd Law (The Law of Harmonies) The ratio of the
  squares of the periods of any two planets is
  equal to the ratio of the cubes of their average
  distances from the sun.
• Ta2/Tb2 Ra3/Rb3

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Practice Problems

• Click on any planet Planet to go to some practice
  problems