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• What we are going to learn

  • The Universal Law of Gravitation

    How two objects with mass attract each other

  • The inverse square law

    Students should be able to recognize application and examples of the inverse square law

• What we know

  • centripetal acceleration

• The Discovery of Gravity

  • The Falling Apple

  • The Falling Moon

  • The Falling Earth

• Newton's Law of Universal Gravitation

  • The Universal Gravitation Constant, 'G'

• The Inverse Square Law

  • Things that follow this law will grown smaller by the square of the distance between them

    double distance and it it will be 4 times smaller

    

    triple distance and it 9 times smaller or 1/9 of the previous value    

  • more gravity and inverse square law examples

  • http://hyperphysics.phy-astr.gsu.edu/hbase/forces/isq.html#isqg

• Universal Gravitation

  • Perturbation

LINKS TO MORE STUFF

• SPACE INFO

  • the Moon fact sheet (NASA)

  • the sun fact sheet (NASA)

  • THE PLANETARY FACT SHEET (NASA)

• HISTORY

  • Galileo's Actual Manuscript Notes on Motion (do you know Latin? if you know Spanish you may understand some of this!)

  • Galileo's  Dialog Concerning Two New Sciences (translations)

  • Escape Velocity Calculator

  • escape velocity calculator

• Tutorials and more explanations

  • The physics hypertextbook - universal gravitation http://hypertextbook.com/physics/mechanics/gravitation/

  • HyperPhysics - Gravity

  • http://www.martindalecenter.com/Calculators3A.html

• Gravity Sims

  • Interactive 3D Solar System Sim (download file , right click and select 'install')

  • Gravitational Field

  • Astronomy Applets - Walter Fendt (download zip file)

  • Physics Simulations - Walter Fendt (download zip file)

  • Math Simulations - Walter Fendt (downlaod zip file)

(I haven't tried these yet, let me know if any of them are good!)

http://www.handyarchive.com/free/gravity/