Physics
Physics, 26.06.2020 20:01, webbhlharryteach

I raised a 20 kg rock 1.5 m off the ground. I am just holding it now. Nothing is moving (except for the muscles in my back and arms that are twitching like crazy--doing work--but that's internal energy/work). So how much mechanical work am I doing now

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I raised a 20 kg rock 1.5 m off the ground. I am just holding it now. Nothing is moving (except for...

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