Thursday, February 16, 2012
Blog #3- lever, pulley, and wheel and axle
A lever is a simple machine that helps you lift things that are really heavy. The closer the fulcrum is to the load the less force you have to apply to lift it. A pulley is used to lift things in the air using a rope, wheel, and axle. A pulley helps change the direction of an object. A wheel and axleis used to mave a heavier load. The wheel doesn`t always have to be round.
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very simple but clear and easy to understand picture. remember that a simple machine is not just about lifting but is also about making all work easier - lifting, moving, hunting with your bow,...
ReplyDeleteI like your descriptions and your drawings are very creative! Good JOb!
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