2.10 Newton's Law of Universal Gravitation

Pre-Lecture Reading 2.10

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Astronomy Today, 8^th Edition (Chaisson & McMillan)
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Astronomy Today, 7^th Edition (Chaisson & McMillan)
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Astronomy Today, 6^th Edition (Chaisson & McMillan)

Video Lecture

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Newton's Law of Universal Gravitation (17:24)

Supplementary Notes

Newton's Law of Universal Gravitation

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See Newton's Law of Universal Gravitation.

Every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the distance between them.

( 13 )

F =

GMm

r²

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F = force of gravity
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G = Newton's gravitational constant
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M = mass of first object
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m = mass of second object
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r = distance between first and second objects

Exercises

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Experiment with UNL's Newton's Law of Gravity Calculator.
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Experiment with UNL's Gravity Algebra.

Assignment 2

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Do Question 10.