Why is it that chainsaws need a pull cord to start? Couldn’t they just be turned off or on with a switch?
In: Engineering
The pull cord on a chainsaw (or a lawnmower, for that matter) starts turning the engine over, which produces the energy needed to kickstart the engine into motion.
If you had a switch…you’d close an electric circuit, but where would the electricity come from? What would make the engine turn on to produce the electricity?
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