| Simple Machine Invention: The Crusher |
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It is for helping people. It costs $10. It has a wheel and axle and a lever. It is a moving hammer. It is one foot. My mom should buy it. |
| LINKS> | http://sln.fi.edu/qa97/spotlight3/spotlight3.html
http://www.coe.uh.edu/archive/science/science_lessons/scienceles1/plane.htm |