In Figure 6(b), the rotating elements B, which weigh 1288 lb and have a radius gyration of k = 2.5ft, are turning 120 rpm. While it moves 80 ft downward, the 2.78 lb weight A is brought to rest by the constant friction force at the brake shoe C, where f= 1/3 The shape of arm is such that e = 0. What is the value of the force Q applying the brake? D- Figure 6(b)

In Figure 6(b), the rotating elements B, which weigh 1288 lb and have a radius gyration of k = 2.5ft, are turning 120 rpm. While it moves 80 ft downward, the 2.78 lb weight A is brought to rest by the constant friction force at the brake shoe C, where f= 1/3 The shape of arm is such that e = 0. What is the value of the force Q applying the brake? D- Figure 6(b)

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.60P: The force P applied to the brake handle enables the band brake to reduce the angular speed of a...

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In Figure 6(b), the rotating elements B, which weigh 1288 lb and have
a radius gyration of k = 2.5ft, are turning 120 rpm. While it moves 80
ft downward, the 2.78 lb weight A is brought to rest by the constant
friction force at the brake shoe C, where f= 1/3 The shape of arm is
such that e = 0. What is the value of the force Q applying the brake?
A
Figure 6(b)

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