there is no friction between shaft AB and the collar, what angular velocity Ö must the mechanism have to keep the collar at r= 660 mm from the vertical axis? Consider the same mechanism again, with m = 3.3 kg, d = 275 mm, k = 180 N/m, only now, instead of being smooth, the collar and shaft have a maximum coefficient of friction of 0.74. What is the minimum angular velocity required to keep the collar at a constant distance r= 660 mm from the axis of rotation?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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If there is no friction between shaft AB and the collar, what angular velocity Ö must the mechanism have to keep the collar at r= 660 mm from the vertical axis?

Consider the same mechanism again, with m = 3.3 kg, d = 275 mm, k = 180 N/m, only now, instead of being smooth, the collar and shaft have a maximum
coefficient of friction of 0.74. What is the minimum angular velocity required to keep the collar at a constant distance r= 660 mm from the axis of rotation?

Learning Goal:
To set up and analyze equations of motion in a cylindrical coordinate
system.
The mechanism shown in the figure below rotates about the vertical
axis. The collar has mass m = 3.3 kg. The spring has an
unstretched length of 420 mm and the spring constant is
k = 180 N/m. The distance d = 275 mm, and the collar is
required to stay a fixed distance r = 660 mm from the vertical axis.
(Figure 1)
Figure
ocks
k
C
B
1 of 1
Transcribed Image Text:Learning Goal: To set up and analyze equations of motion in a cylindrical coordinate system. The mechanism shown in the figure below rotates about the vertical axis. The collar has mass m = 3.3 kg. The spring has an unstretched length of 420 mm and the spring constant is k = 180 N/m. The distance d = 275 mm, and the collar is required to stay a fixed distance r = 660 mm from the vertical axis. (Figure 1) Figure ocks k C B 1 of 1
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