Problem 2: To reduce the power requirements on elevator motors, elevators are counterbalanced with weights connected to the elevator by a cable that runs over a pulley at the top of the elevator shaft. Neglect any effects of friction in the pulley. A 600-kg elevator (not including passengers) is counterbalanced with a 450 kg weight. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s. The motor provides mechanical power of 8.2 kW. What is the maximum number of passengers that can ride in the elevator? Assume that the average passenger has a mass of 65.0 kg.

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Problem 2:
To reduce the power requirements on elevator motors, elevators are counterbalanced
with weights connected to the elevator by a cable that runs over a pulley at the top of the
elevator shaft. Neglect any effects of friction in the pulley. A 600-kg elevator (not
including passengers) is counterbalanced with a 450 kg weight. The elevator is designed
to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s. The
motor provides mechanical power of 8.2 kW. What is the maximum number of
passengers that can ride in the elevator? Assume that the average passenger has a mass
of 65.0 kg.
Transcribed Image Text:Problem 2: To reduce the power requirements on elevator motors, elevators are counterbalanced with weights connected to the elevator by a cable that runs over a pulley at the top of the elevator shaft. Neglect any effects of friction in the pulley. A 600-kg elevator (not including passengers) is counterbalanced with a 450 kg weight. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 16.0 s. The motor provides mechanical power of 8.2 kW. What is the maximum number of passengers that can ride in the elevator? Assume that the average passenger has a mass of 65.0 kg.
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