Gears A power point presentation by Student Name..

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Presentation transcript:

Gears A power point presentation by Student Name.

Definition A wheel with teeth that interlocks with another gear.

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

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

Gears in Everyday Life

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

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

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

Solution MA=10cm 5cm MA=2

Webography Science Focus clipart/gifs/gears.gif daihatsu-ie.ingway.ne.jp/showroom/ features/main.html Clip Art

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