ocr: Why aren't gears perfect? Ifthe gears on the pinball game worked perfectly, then all the energy carried by the gears would transfer to the cog. In real life, no gears work like this. All gears have imperfections that make them lose some of their energy. Friction - a force that resists motion - is the main reason that gears lose energy. Most triction is created when the gear surfaces touch and move over each other. Gears also create friction as they move through the air. Gears create less triction if their surfaces are smooth and free of dirt, and if theyre covered in a lubricant such as grease ...
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