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Physics I Class 17

Physics I Class 17. Newton’s Theory of Gravitation. Forces Known to Physics. Forces in Physics 1 (so far). Newton’s Theory of Gravitation. Newton’s Law of Universal Gravitation. Properties of Gravity. If Gravity Varies As 1/r 2 , Where Does g = 9.8 m/s 2 Fit In?.

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Physics I Class 17

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  1. Physics IClass 17 Newton’s Theory of Gravitation

  2. Forces Known to Physics

  3. Forces in Physics 1(so far)

  4. Newton’s Theory of Gravitation

  5. Newton’s Law ofUniversal Gravitation

  6. Properties of Gravity

  7. If Gravity Varies As 1/r2,Where Does g = 9.8 m/s2 Fit In?

  8. Gravity is aConservative Force

  9. We Have Two Formulas for Gravitational Potential Energy!

  10. Class #17Take-Away Concepts

  11. Class #17Problems of the Day

  12. Class #17Problems of the Day

  13. Activity #17Gravitation

  14. Class #17 Optional MaterialPart A - Kepler’s Laws of Orbits Material on Kepler’s Laws thanks to Professor Dan Sperber

  15. Kepler’s Three Lawsof Planetary Motion 1. The Law of Orbits: All planets move in elliptical orbits having the Sun at one focus. 2. The Law of Areas: A line joining any planet to the Sun sweeps out equal areas in equal times. 3. The Law of Periods: The square of the period of any planet about the Sun is proportional to the cube of the semi-major axis of its orbit.

  16. Kepler’s Three Lawsof Planetary Motion

  17. The Law of Areas

  18. The Law of Periods

  19. ENERGY IN CIRCULARORBITS

  20. Class #17 Optional MaterialPart B - General Relativity Material on General Relativity thanks to Albert Einstein

  21. Where Did Newton Go Wrong?(Again!)

  22. The Principle of Equivalence

  23. The Principle of Equivalence

  24. General Theory of Relativity

  25. Black Holes

  26. If Newton’s Gravity isn’t true, why do we still use it? • Massive Black Holes • In Galaxies • NGC 3377, NGC 3379 • And NGC 4486B

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