What are simple machines
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Simple machine, any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform work. They are the simplest mechanisms known that can use leverage (or mechanical advantage) to increase force.
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simple machines , any of several devices with few or no moving parts that are used to modify motion and the magnitude of a force in order to perform a work ....
the simple machines are the inclined plane, lever , wedge , wheel and axle , pulley and screw....
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