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usljoo
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when a particle is constraint to move on a circle, what are the constraint forces
when a particle is constraint to move on a circle, what are the constraint forces
when a particle is constraint to move on a circle, what are the constraint forces
when a particle is constraint to move on a circle, what are the constraint forces
And this is the reason why it is harder to apply a force like on the picture to a circle of smaller radius and that is because there will be a component of the centripetal force that is opposite to the applied force F on the picture and that’s why torque gets smaller with r.
Looking at your diagram I think I understand your question.
Unfortunately, taking your posts in this thread and your previous one, you seem to have a basic misunderstanding about circular motion.
There is no way that F has anything to do with motion around the circle you have drawn.
None of this is meant as a personal criticism; I really am trying to help.
You did not bother to answer my previous question. All my questions are designed to help and further understanding.
Have a look at this recent thread, where I like to think the OP went away with a better understanding and achieved something for himself.
https://www.physicsforums.com/showthread.php?t=468864
Now just answer this simple question.
If you take a string and pull it out taught so it is under tension, what are the forces acting in the string and on the string?
Can you draw a simple diagram?
the forces on the string are the tension force witch acts on the pivot