An elevator car (shown in the figure below) has a mass of 2000 kg and is carrying passengers having a combined mass of 500 kg. A constant friction force of 2000 N retards its motion. How much power must a motor deliver to lift the elevator car and its passengers at a constant speed of 3.00 m/s? (g= 10 m/s) Motor O a. 81 kW O b. 108 kW O c. 54 kW O d. 27 kW

An elevator car (shown in the figure below) has a mass of 2000 kg and is carrying passengers having a combined mass of 500 kg. A constant friction force of 2000 N retards its motion. How much power must a motor deliver to lift the elevator car and its passengers at a constant speed of 3.00 m/s? (g= 10 m/s) Motor O a. 81 kW O b. 108 kW O c. 54 kW O d. 27 kW

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter11: Energy And Its Conservation

Section: Chapter Questions

Problem 2STP

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