17-1 Physics I Class 17 Newton’s Theory of Gravitation.

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17-1 Physics I Class 17 Newton’s Theory of Gravitation.
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Physics I Class 17 Newton’s Theory of Gravitation.
Presentation transcript:

17-1 Physics I Class 17 Newton’s Theory of Gravitation

17-2 Forces Known to Physics

17-3 Newton’s Theory of Gravitation

17-4 Newton’s Law of Universal Gravitation

17-5 Properties of Gravity

17-6 If Gravity Varies As 1/r 2, Where Does g = 9.8 m/s 2 Fit In?

17-7 Gravity is a Conservative Force

17-8 Class #17 Problems of the Day

17-9 Kepler’s Three Laws of 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.

17-10 Kepler’s Three Laws of Planetary Motion

The Law of Areas

The Law of Periods

ENERGY IN CIRCULAR ORBITS

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