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## Chapter 7

by: Jacob Edwards

29

3

# Chapter 7 80218 - PHYS 1220 - 001

Jacob Edwards
Clemson
GPA 3.2
Physics with Calculus I
Lih-sin The

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These cover planetary motion.
COURSE
Physics with Calculus I
PROF.
Lih-sin The
TYPE
Class Notes
PAGES
WORDS
CONCEPTS
Physics
KARMA
25 ?

## Popular in Physics 2

This page Class Notes was uploaded by Jacob Edwards on Sunday February 28, 2016. The Class Notes belongs to 80218 - PHYS 1220 - 001 at Clemson University taught by Lih-sin The in Winter 2016. Since its upload, it has received 29 views. For similar materials see Physics with Calculus I in Physics 2 at Clemson University.

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Date Created: 02/28/16
Chapter 7 Kepler39s Laws of Planetary Motion Planetary orbits are ellipse with the sun present at one focus The position when a planet is closest to the sun is called the perihelion The position where a planet is farthest from the sun is the aphelion The length of the semi major axis is the average distance of a planet from the sun rprA 2 a rp The perihelion distance rA The aphelion distance This answer comes in Astronomical Units or AU 1 AU15E11 meters In Kepler39s second law he states that a line joining the planet to the sun sweeps out equal areas in equal time intervals The time it takes a planet to orbit the sun is a period In Kepler39s third law it says that the square of a planet39s period T is proportional to the cube of its semimajor axis TfyrjzafAU Newton theorized that gravity applies to all objects in the universe Newton39s law of universal gravity shows G The gravitational constant 6673E11 The gravitational value is the same towards the center of the Earth as it is everywhere The gravitational eld of any source can be found from Unit vector pointing away 3 particle GM 8r 2 r GGravitational constant M Mass r Radius

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