5. An elevator car has a mass of 1600 kg and is carrying passengers having a combined mass of 200 kg. A constant friction force of 4000 N opposes its motion. a. How much power must a motor deliver to lift the elevator car and its passengers at a constant speed of 3.00 m/s? b. What power must the motor deliver at the instant the speed of the elevator is v if the motor is designed to provide the elevator care with an upward acceleration of 1 m/s².
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W = 1600 kg x 4000 N = 8800 N Show more…
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