A chair lift is to be installed from the surface down to a depth of 150 m. The inclination is 17 degrees to the horizontal. An operating velocity is to be used, and the system will be required to transport 300 persons per hour. Assuming the worst-case scenario, namely that no persons travel down while the system has a full load traveling up, determine: 1. the spacing of thr chairs 2. the traveling time per person 3. the output power of the motor required to drive the system Perfomance criteria: A force criteria: A force of 2 kN per 100 m of the length of the loaded part of the system is required to overcome friction. Mass per person: 70 kg Overall mechanical efficiency: 85%
A chair lift is to be installed from the surface down to a depth of 150 m. The inclination is 17 degrees to the horizontal. An operating velocity is to be used, and the system will be required to transport 300 persons per hour. Assuming the worst-case scenario, namely that no persons travel down while the system has a full load traveling up, determine: 1. the spacing of thr chairs 2. the traveling time per person 3. the output power of the motor required to drive the system Perfomance criteria: A force criteria: A force of 2 kN per 100 m of the length of the loaded part of the system is required to overcome friction. Mass per person: 70 kg Overall mechanical efficiency: 85%
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A chair lift is to be installed from the surface down to a depth of 150 m. The inclination is 17 degrees to the horizontal. An operating velocity is to be used, and the system will be required to transport 300 persons per hour. Assuming the worst-case scenario, namely that no persons travel down while the system has a full load traveling up, determine:
1. the spacing of thr chairs
2. the traveling time per person
3. the output power of the motor required to drive the system
Perfomance criteria:
A force criteria:
A force of 2 kN per 100 m of the length of the loaded part of the system is required to overcome friction.
Mass per person: 70 kg
Overall
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