1. Gears A power point presentation by Student Name.

2. Definition A wheel with teeth that interlocks with another gear. http://www.webthing.net/settingsun/

3. Definition There are two kinds of gears: ~driver gears ~follower gears

4. Gears in Everyday Life You can find gears in almost anything mechanical that moves. Here are some examples: ~ Clocks ~ Car motors and transmissions ~ VCRs www.presentersonline.com/resources/ clipart/gifs/gears.gif

5. Gears in Everyday Life

6. Mechanical Advantage This is the MA formula : MA=radius of driver gear radius of follower gear

7. Speed Ratio Gears give you force or speed advantages. ~For a speed advantage,the driver gear is bigger than the follower gear. ~The formula for a speed advantage in gears is SR= # of teeth on driver gear # of teeth on follower gear

8. Mechanical Advantage Problem Bob turns a gear that has a radius of 10 cm. If the follower gear has a radius of 5cm, what is the mechanical advantage of the two gears? daihatsu-ie.ingway.ne.jp/showroom/ features/main.html

9. Solution MA=10cm 5cm MA=2

10. Webography Science Focus 8 http://www.webthing.net/settingsun/ www.presentersonline.com/resources/ clipart/gifs/gears.gif daihatsu-ie.ingway.ne.jp/showroom/ features/main.html Clip Art

11. Special Thanks To… www.google.ca