Physics, 24.01.2020 04:31, joelpimentel

Acargo elevator on earth (where g = 10 m/s2) lifts 3000 kg upwards by 20 m. 720 kj of electrical energy is used up in the process. what is the efficiency of this process?

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Acargo elevator on earth (where g = 10 m/s2) lifts 3000 kg upwards by 20 m. 720 kj of electrical ene...