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Simple Machines By Mr. Steven King
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What is a simple machine?
It is a tool that makes work easier to do. It changes the size or direction of a force. This is an example of an inclined plane. It makes it easier to move items up and down.
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Levers and Wedges A lever is something like a crowbar or hammer.
You can use it as a wedge to lift or pry something open. We use a wedge to keep open the door.
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Lifting That Heavy Load!
A pulley is a simple machine. In the olden days, pulleys were used to get water out of a well.
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Simple Machines You Use
Do you like riding your bike? Did you know that this is also a simple machine? It’s called a wheel and axle!
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The Screw A screw is an inclined plane wrapped around on itself.
It holds things together, like parts of a table leg.
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