In a pulley brake with inside shoes with an inner rim diameter of 300 mm given in the figure, R= 150 mm, shoe width 37.5 mm. The value of the force F applied on the shoes is It is 2 kN. If the average friction coefficient is taken as 0.28; a) Max. what is the value of the pressure? b) Find the braking and normal torques and the total torque at each shoe. c) What are the values of the reaction forces on the right shoe knuckle pin? Note: Max. Take the angle (theta) at which the pressure “pa” occurs as 90 degrees.
In a pulley brake with inside shoes with an inner rim diameter of 300 mm given in the figure, R= 150 mm, shoe width 37.5 mm. The value of the force F applied on the shoes is It is 2 kN. If the average friction coefficient is taken as 0.28; a) Max. what is the value of the pressure? b) Find the braking and normal torques and the total torque at each shoe. c) What are the values of the reaction forces on the right shoe knuckle pin? Note: Max. Take the angle (theta) at which the pressure “pa” occurs as 90 degrees.
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter1: Heat, Temperature, And Pressure
Section: Chapter Questions
Problem 17RQ: Convert 22C to Fahrenheit.
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In a pulley brake with inside shoes with an inner rim diameter of 300 mm given in the figure,
R= 150 mm, shoe width 37.5 mm. The value of the force F applied on the shoes is
It is 2 kN. If the average friction coefficient is taken as 0.28;
a) Max. what is the value of the pressure?
b) Find the braking and normal torques and the total torque at each shoe.
c) What are the values of the reaction forces on the right shoe knuckle pin?
Note: Max. Take the angle (theta) at which the pressure “pa” occurs as 90 degrees.
Transcribed Image Text:120°
30°-
Pim
30°-
F
30°.
R
Pim
30°.
120°
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