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Simple Machines
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Simple Machines: The Lever |
| edHelper's suggested reading level: | grades 3 to 5 | |
| Flesch-Kincaid grade level: | 2.65 |
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Simple Machines: The Lever
By Brandi Waters |
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1 There are six simple machines. They make it easier for us to do work. The lever is one kind of simple machine. A lever is a bar that balances on a point. The point is called the fulcrum. You can move the fulcrum to make work easier. A crowbar is a lever. It helps to pry things apart. A see-saw is also a kind of lever. It is a board that balances on a point. The fulcrum is on the middle of the board. This makes it easy to balance and move back and forth. A see-saw works best if the people on it are close to the same weight. A child weighs much less than an adult. A child sitting on one side of the see-saw could not lift an adult sitting on the other side. .....