Saturday, 20 September 2014

newtonian mechanics - Why exactly is work a path function?


This might be a stupid question, but why exactly is work a path function?


In school, my teacher said it’s because it depends on the path. She gave an example of walking up a mountain, and said the work you expend depends on the path you take (straight path up or circling up around the mountain). But isn’t the work expended just equal to $E= mgh?$




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