ocr: What are gears? Simple gears, like the ones used here to make the cog turn, are toothed wheels that fit together in order to transmit force and motion. They are usually found in machines, such as watches, engines, and drills, that have rotatingparts. - - - - - - - - 7 - - - 4 - - - - (OP - - - - - - - - - - - - Simple Gears
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