34.5 Gravity

34.5 Gravity
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  • What kept the moon traveling in it's orbit around earth?
  • ?
  • Maybe all objects had a force of attraction between them.
  • Newton's law provided a physical explanation for what earlier had discovered.
  • Newton's work supported the earlier work of Copernicus and Galileo that the planted moved around the sun.
  • In space these "tugs" canceled each other put.The result:moon was trapped in it;s orbit around earth.
  • The strength of the force depended on the masses of the objects and the distance between
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