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An adult weighing 600 N raises the centre of gravity of his body by 0.25 m while taking each step of Im length in

An adult weighing 600 N raises the centre of gravity of his body by 0.25 m while taking each step of Im length in jogging. If he jogs for 6 km, the energy utilised by him in jogging is (a) 9106J (b) 9105J (c) 6106J (d) 6 10J

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