What’s the difference between a cog and a gear?
In: Engineering
A cog is a tooth on a wheel. When two cogwheels mesh with each other, they are called gears. When a cogwheel works with a chain (and some sorts of toothed belts), it’s called a sprocket. The remaining applications that use cogs may only have one or two on a wheel, so that the interaction is intermittent, or involve other mechanisms like a ratchet or track.
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