Science - Simple machine (Inclined plane, Wheel and axle and Pulley)

This video explains simple machines and how they work. It describe function of inclined plane, wheel and axle and pulley with real-life examples. Next, learn about screw, wedge and lever. Know the revolutionary simple machine, lever more, watch: http://www.youtube.com/watch?v=uZwu_KjmP5I

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