L05b - 1 17 Physics 111 Lecture 5b The apple and the...

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Unformatted text preview: 1 / 17 Physics 111 Lecture 5b: The apple and the moon—Newton’s law of universal gravitation “One had to be a Newton to notice that the moon is falling, when everyone sees that it doesn’t fall.” –Paul Valery Outline of the class Outline History Kepler’s laws Newton Law Newton Brahe and Kepler Hints Satellite Demo 2 / 17 ■ Historical prelude ■ Kepler’s laws ■ Newton’s law of universal gravitation ■ Example: Satellite motion Historical prelude Outline History Kepler’s laws Newton Law Newton Brahe and Kepler Hints Satellite Demo 3 / 17 ■ Ptolemy (2nd century),..., Copernicus (1473-1543): ◆ Geocentric vs. Heliocentric world ■ Tycho Brahe (1546-1601), Johannes Kepler (1571-1630) ◆ Kepler’s laws of planetary motion ◆ Based on observation made by Brahe ■ Sir Isaac Newton (1643-1727): Universal law of gravitation ◆ Kepler’s laws were consequences of the gravitational force between the sun and the planets Kepler’s first law Outline History Kepler’s laws Newton Law Newton Brahe and Kepler Hints Satellite Demo 4 / 17 ■ All planets move in elliptical orbits with the Sun at one focus ◆ Second focus is empty Kepler’s second law...
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This note was uploaded on 04/22/2008 for the course PHYS 111 taught by Professor Madrid during the Winter '08 term at Ohio State.

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L05b - 1 17 Physics 111 Lecture 5b The apple and the...

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