The elevator in the new building (represented by E in the figure) has a weight of WE = 4500 lb when fully loaded and is connected as shown to a W of weight of Ww = 900 lb. The motor has an efficiency of counterweight n = 80%. Determine: (a) The required electrical power in hp delivered by the motor when the elevator is moving down at a constant speed of 2.5 ft/s. (b) The required electrical power when it has an upward velocity of 2.5 ft/s and a deceleration of 0.5 ft/s². E W M

The elevator in the new building (represented by E in the figure) has a weight of WE = 4500 lb when fully loaded and is connected as shown to a W of weight of Ww = 900 lb. The motor has an efficiency of counterweight n = 80%. Determine: (a) The required electrical power in hp delivered by the motor when the elevator is moving down at a constant speed of 2.5 ft/s. (b) The required electrical power when it has an upward velocity of 2.5 ft/s and a deceleration of 0.5 ft/s². E W M

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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