Conceptual Physics Notes on Chapter 12 UniversalGravitation.

Slides:

Advertisements

Similar presentations

Universal Gravitation Newton Cavendish Examples Whiteboards.

Advertisements

Conceptual Physics – Chapter 12. Galileo  Inertia (Newton made it a law later)  Mass does not effect acceleration of gravity  Sun and not.

Universal Gravity Notes

Earth and Moon I 1) the Earth pulls harder on the Moon

Gravity Section 1-2.

Universal Gravitation

Universal Gravitation

Chapter 7 Law of Gravity & Kepler’s Laws

Universal Gravitation

Newton’s Law of Universal Gravitation

Universal Gravitation Sir Isaac Newton: The Universal Law of Gravitation.

Newton’s Law of Gravitation. Newton concluded that gravity was a force that acts through even great distances Newton did calculations on the a r of the.

Newton’s Law of Gravitation. Newton concluded that gravity was a force that acts through even great distances Newton did calculations on the a r of the.

Universal Gravitation Chapter 8. Isaac Newton and Gravity Newton realized an apple falls because of force Moon follows circular path, force needed Newton.

1.  Legend has it that Sir Isaac Newton was struck on the head by a falling apple while napping under a tree. This prompted Newton to imagine that all.

How we know what we know An introduction into orbital mechanics Matt Hamill.

Law of Universal Gravitation

Gravity. Gravity is a pulling force It pulls things down towards the earth.

Gravity By. Spencer Liston & Nick Ackerman. What is gravity? Gravity is a force pulling together matter (which is anything you can physically touch.)

Review Question What are Kepler’s laws?. Review Question What are Newton’s laws?

Law of Universal Gravitation Chapter 12 November 9/10.

Universal Gravitation

Have you heard the story about the apple? There is famous story about the creation of one of Newton’s law that says that he was sitting under apple tree,

Gravity The force of attraction between objects that is due to their masses.

Gravitation. The apple and the Moon The story goes that Isaac Newton deduced the law of gravitation upon seeing an apple fall from a tree.

1 The Law of Universal Gravitation. 2 A little background … Legend has it that Sir Isaac Newton was struck on the head by a falling apple while napping.

What is gravity? Section 2-2.

Gravity. Wait, what does gravity have to do with rotational motion? Let’s look at some well-known physicists and their work to find the answer.

Universal Gravitation. Gravity… Makes things such as leaves and rain fall It made the Earth round Builds up the pressures that kindle every star to shine.

Law of Universal Gravitation. Newton’s Universal Law of Gravity Legend has it that Newton was struck on the head by a falling apple while napping under.

Newton’s Law of Universal Gravitation

Gravity: A Force of Attraction

Gravity F Why would air make a difference? If you drop a ball and a feather from the same height at the same time, the ball would hit the ground.

Chapter 1, section 4 Cohick. Effects of Gravity on Matter Why is leaping in space easier than leaping on Earth? Yes--Gravity!!

If it is known that A is directly proportional to B, how would A change if B is increased by a factor of 2? 1. Increase by a factor of 2 2. Increase by.

Gravity: A Force of Attraction Chapter 19 Matter in Motion Section 4.

The Law of Universal Gravitation. The legend goes that Sir Isaac Newton developed his theory when an apple fell on his head.

Universal Gravitation Chapter 12. The Falling Apple The idea that gravity extends through the universe is attributed to Sir Issac Newton He knew that.

Universal Law of Gravitation. Newton and Gravity Newton and the apple “If gravity attracts an apple toward the Earth, perhaps it also attracts the Moon,

Matter In Motion Gravity: A Force of Attraction. Terms Gravity~ a force of attraction between objects that is due to their masses Weight~ a measure of.

Gravity is a force that pulls objects toward each other. Legend says that Isaac Newton discovered gravity when he saw an apple fall from a tree Sir Isaac.

FgFg agag mg g W Do you know the difference?? Newton’s Law of Universal Gravitation Every body in the universe attracts every other body with a force.

NEWTON’S LAW OF UNIVERSAL GRAVITATION Newton’s Law of Universal Gravitation.

Law of Universal Gravitation

The Drag Force and Terminal Speed

Everything pulls on everything else.

Centripetal force Acceleration Mass Contact force momentum

Newton’s law of Universal Gravitation

Lots of fun! Win valuable prizes!

GRAVITY – ITS NOT JUST A GOOD IDEA …. IT’S THE LAW!!!

Add info about mass vs. weight

Universal Gravitation

Newton’s Law of Universal Gravitation

Gravity: The Force of Attraction

Newton’s Laws of Motion

Newton’s Law of Universal Gravitation

Gravity Chapter 3.2.

Gravity: The Force of Attraction

Chapter 13 Forces in Motion

Universal Gravitation

Chapter 13 Forces in Motion

Newton’s Law of Gravitation

Newton’s Law of Universal Gravitation

Newton’s Law of Universal Gravitation

Chapter 13 Forces in Motion

Universal Gravitation

Newton’s Law of Universal Gravitation

Presentation transcript:

Conceptual Physics Notes on Chapter 12 UniversalGravitation

Universal Gravitation Isaac Newton and the falling apple --- Isaac Newton and the falling apple --- Newton was under a apple tree when a apple hit him on the head and he got an idea that changed the world. Newton was under a apple tree when a apple hit him on the head and he got an idea that changed the world. What was his GREAT idea? …. What was his GREAT idea? ….

Universal Gravitation Isaac Newton and the falling moon --- Isaac Newton and the falling moon --- Newton compared a falling Newton compared a falling apple to the moon in orbit around the Earth. He said that the moon fell toward the earth as fast as it moved in a straight line - tangential velocity.

Universal Gravitation Newton “generalized” Newton “generalized” his moon findings to ALL objects, and said that ALL objects in the universe attract each other. (Law of Universal Gravitation)

Universal Gravitation NEWTON’S LAW OF UNIVERSAL GRAVITATION Every object attracts every other object with a force directly proportional to the mass of each object, but decreases as the square of the distance between masses. Every object attracts every other object with a force directly proportional to the mass of each object, but decreases as the square of the distance between masses. F ~ m 1 m 2 F ~ m 1 m 2 d 2 d 2

Universal Gravitation We want the force to equal, so we have to add a constant to the equation. We want the force to equal, so we have to add a constant to the equation. G = 6.67 x kg (Note that the force of gravity is very weak) Henry Cavendish measured G 150 years after Newton’s Law listed above and was said to have WEIGHED the world! Henry Cavendish measured G 150 years after Newton’s Law listed above and was said to have WEIGHED the world!

Universal Gravitation

So the equation becomes: So the equation becomes: F = G m 1 m 2 d 2 d 2

Universal Gravitation Inverse-square Law: The brightness of an object decreases dramatically as we move farther from the source. The result is due to a larger "sphere" of influence. Light from a source like a star shines in all directions, to the area of illumination increases with increasing distance so the total brightness thins out.

Universal Gravitation

EXAMPLES: 3 2 = 9 but 1/3 2 = 1/9 3 2 = 9 but 1/3 2 = 1/9 2d 2 = 4dbut 1/2d 2 = 1/4d 2d 2 = 4dbut 1/2d 2 = 1/4d (Note that as the distance gets LARGER, the overall force gets smaller )