Universal Law of Gravitation?. Universal Law of Gravitation Pick a flower on Earth and you move the farthest star! 1933 Nobel prize winner, Paul Dirac,

Universal Law of Gravitation?

Universal Law of Gravitation

“Pick a flower on Earth and you move the farthest star!”

1933 Nobel prize winner, Paul Dirac, Physicist

He was speaking of the far reaching effects of gravity

Universal Law of Gravitation

Universal Law of Gravitation

Universal Law of Gravitation

Everything pulls on everything else in a beautifully simple way that involves only mass and distance

Newton did not discover gravity…what Newton discovered was that gravity is universal.

Universal Law of Gravitation

Universal Law of Gravitation

• F = force of gravity• M1= mass of one object

• m2= mass of other object

• d = distance between the centers • of the masses• G = universal gravitational • constant

Universal Law of Gravitation

The force of gravity between 2 objects is actually a very weak force.

Big G is 6.67 x 10-11 N-m2

• kg 2

We sense gravity only when very large masses, like the earth, are involved.

Universal Law of Gravitation

• Using only pencil and paper, Neptune was discovered.• Uranus was behaving strangely despite all the

calculations of Newton’s law of gravitation. Two astronomers in 1846 sent letters to observatories to search a certain part of the sky. The planet Neptune was discovered in ½ hour.

• Again, Pluto was discovered the same way, because of the odd behavior of Uranus.

• As the planet Jupiter approaches the planet Saturn in its orbit, it tends to deviate from its otherwise smooth path; this deviation, or perturbation, is easily explained when considering the effect of the gravitational pull between Saturn and Jupiter.

Universal Law of Gravitation

“Pick a flower on Earth and you move the farthest star!” 1933 Nobel prize winner, Paul Dirac,

Physicist

He was speaking of the far reaching effects of gravity

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