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16-12-2022
Physics

Answered

an elevator in a tall building is fitted with a counterweight. the total mass of the car and passengers is 668 kg. the counterweight has mass 512 kg. a motor lifts the elevator car through a distance of 16.2 m in 15.0 s. the efficiency of the motor is 24.0%. calculate the total input of electrical power to the motor.

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