1 / 19

230 likes | 815 Vues

Isaac Newton. Isaac Newton. Isaac Newton. Initial calculations didn’t work. Isaac Newton. Initial calculations didn’t work Placed theory in a drawer for 20 years. Isaac Newton. Initial calculations didn’t work Placed theory in a drawer for 20 years

Télécharger la présentation
## Isaac Newton

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Isaac Newton**• Initial calculations didn’t work**Isaac Newton**• Initial calculations didn’t work • Placed theory in a drawer for 20 years**Isaac Newton**• Initial calculations didn’t work • Placed theory in a drawer for 20 years • When the comet of 1670 came, Halley convinced him to re- look at it.**Isaac Newton**• Initial calculations didn’t work • Placed theory in a drawer for 20 years • When the comet of 1670 came, Halley convinced him to re- look at it. • Produced the Law of Universal Gravitation**Law of Universal Gravitation**F ~ m1m2 d2 F = G x m1m2 d2 G = 6.67 x10-11 N m2 / kg2**Universal gravitation constant**(G) = 6.67 x10-11 N m2 / kg2 • Equals the force of attraction between two 1kg masses 1 meter apart**Universal Law of Gravitation**• Youtube http://www.youtube.com/watch?v=NPyH93vXutk http://www.youtube.com/watch?v=D5BQkdyAw8A**Universal gravitation constant**• Philipp von Jolly’s – measurement experiment • Mercury Flask and a 6 ton lead ball**Gravitational Force**• The force is extremely small and for most tangible things it is two sensitive to measure • attraction to one another is not measurable but the attraction to the earth is what we call weight**Gravitational Force**• It is based on the distance to the center of the earth – • weigh less on a mountain • Is this a new diet infomercial???**Book Questions**• By how much does the gravitational force between two objects decrease when the distance between their centers is doubled, tripled, and increased tenfold? • Consider an apple that is at the top of a tree and is being pulled by the earths gravity with a force of 1 N. If the tree were twice as tall, would the force of gravity be only ¼ as strong?**Spring Tides**Higher Than Average tides and lower than average tides**Neap Tides**High tides lower than average and low tides higher than average

More Related