A fire truck ladder is 20 m long. The ladder has a weight of 5500 N and its center of gravity is located at its center. The ladder is pivoted at point A and is raised into position by a force applied at point C, which is located 8 m away from A. This force has magnitude 8000N and makes an angle of 40 degrees with the ladder. What is the magnitude of the net torque on the ladder about point A? (Hint: Originally, the ladder was resting on the support at point B. However, since the ladder is being raised, assume that point B no longer exerts any force on the ladder.) 12.0 m- 8.0 m 40° 5.9 kN.m 13.9 kN-m 96.1 kN·m 104 kN.m 2.8 kN·m

A fire truck ladder is 20 m long. The ladder has a weight of 5500 N and its center of gravity is located at its center. The ladder is pivoted at point A and is raised into position by a force applied at point C, which is located 8 m away from A. This force has magnitude 8000N and makes an angle of 40 degrees with the ladder. What is the magnitude of the net torque on the ladder about point A? (Hint: Originally, the ladder was resting on the support at point B. However, since the ladder is being raised, assume that point B no longer exerts any force on the ladder.) 12.0 m- 8.0 m 40° 5.9 kN.m 13.9 kN-m 96.1 kN·m 104 kN.m 2.8 kN·m

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 11P: A disk 8.00 cm in radius rotates at a constant rate of 1200 rev/min about its central axis....

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