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12-02-2018
Physics

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A crane with output power of 200W will lift a 600N object a vertical distance of 4.0 meters in seconds

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Аноним Аноним

12-02-2018

1 w = 1N/s the change in total energy =mgh = 600*4 = 2400N. 2400N/200N/s = 12seconds

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