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A force of 250 Nis required to lift a 75 kg massthrough a pulley systemIn order to lift the massthrough 3 m - the rope has to be pulled through 12mTheefficiency of system is [2001]

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A force of 250 Nis required to lift a 75 kg massthrough a pulley systemIn order to lift the massthrough 3 m - the rope has to be pulled through 12mTheefficiency of system is [2001]






 
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