Question: Once under way at a steady speed, the 1000-kg elevator A rises at the rate of 1 story (3 m) per second. Determine the power

Once under way at a steady speed, the 1000-kg elevator A rises at the rate of 1 story (3 m) per second. Determine the power input P_in into the motor unit M if the combined mechanical and electrical efficiency of the system is e = 0.8.

M A

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