Design a automatic locking mechanism for two concentric cylinders

AI Thread Summary
The discussion revolves around calculating the force required to pull an actuator pin from a solid cylinder weighing 15 kg at a 30-degree angle of inclination, with a friction coefficient of 1.5. Participants debate the role of friction, clarifying that while friction acts on the solid cylinder, it does not affect the actuator pin itself. The consensus is that if there is no friction on the pin, it would require no force to retract, but real-world applications would likely involve some friction. The conversation emphasizes the importance of understanding the mechanics involved, including Newton's second law and the concept of shear force. Ultimately, the need for a precise calculation of the disengagement force remains a key focus.
karna soma shankar
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How much force required to pull the actuator pin from the solid cylinder
Weight of the solid cylinder is 15kg
And angle of inclination 30 ,
Coefficient of friction 1.5
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Is this homework?

Do you know Newtons second law? Can you draw a free body diagram?
Is friction acting on the pin and/or the cylinder bore?
 
Yes Friction acting on solid cylinder due to slides on a hallow cylinder ...

Actually I m already calculate the force of solid cylinder acting on a actuator pin
F=wsin30-sliding friction force
 

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karna soma shankar said:
Yes Friction acting on solid cylinder due to slides on a hallow cylinder ...
If there's no friction on the pin then it doesn't require any force at all to retract it. In fact it'll require an upward force to prevent it retracting under it's own weight.
 
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Thank you ...
But I need how much force required to pull the pin from the solid cylinder ...
Here shear force acting on the actuator pin
 
karna soma shankar said:
Thank you ...
But I need how much force required to pull the pin from the solid cylinder ...
Here shear force acting on the actuator pin
Shear force doesn't matter. Was there something in post #4 you didn't understand?
Is there friction acting on the pin or not?
 
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billy_joule said:
Shear force doesn't matter. Was there something in post #4 you didn't understand?
Is there friction acting on the pin or not?
No there is no friction acting on an actuator pin the friction acting only on solid cylinder
 
karna soma shankar said:
No there is no friction acting on an actuator pin the friction acting only on solid cylinder
OK, then post #4 stands.

Obviously real mechanical systems do have friction so the pin will probably require some pull force to disengage.
 
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Ya right but that was I asking how much force required to disengage the pull
I
 
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karna soma shankar said:
Ya right but that was I asking how much force required to disengage the pull

karna soma shankar said:
No there is no friction acting on an actuator pin

So less than zero as billy joule said in #4 and #6.

BoB
 
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