Levers diagrams
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Bernard Nebel.
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The following site provides diagrams for the three basic classes of levers.
http://www.shcool-forchampions.com/machines/levers_classess.htm#.XG7Obq3MyV5
Have kids explore and discuss how almost every hand-tool or implement that we use in everyday life utilizes the principle of a lever in one way or another. Go on to experimentally show that levers don’t change the total work required. They only exchange force and distance. See text. Post questions.
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