Physics, 31.07.2021 01:00, emmdolzx

A cable that weighs 2 kg per meter is used to lift 400 kg of coal up a mineshaft 100 meters deep. However, when it reaches a height of 50 meters, it knocks against the wall and loses 20 kg of coal. How much work is required to lift it all the way from the bottom to the top

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A cable that weighs 2 kg per meter is used to lift 400 kg of coal up a mineshaft 100 meters deep. Ho...