Difference between pendulum with a peg

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The discussion centers on the mechanics of a pendulum interacting with a peg during a loop-the-loop motion. It highlights the confusion around the energy required for the pendulum to clear the peg, noting that a pendulum cannot be released with enough potential energy to return over the peg without additional force. Participants clarify that in one scenario, the pendulum's string goes slack while clearing the peg, while in the other, the string remains taut. The importance of initial velocity and the peg's position relative to the pivot point is emphasized. Understanding these dynamics is crucial for grasping the differences between the two pendulum scenarios.
*best&sweetest*
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:confused: I would like to know what is the difference between pendulum with a peg just completing a loop-the-loop and the same pendulum with the same peg released so that the ball goes over the top of the peg without string going slack. I believe I'm having language problem here, I don't understand it st all. If you could put it in simplier words, that would really help. Thank you!
 
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To be honest, I don't understand your description either :P

You can't release a pendulum with enough potential energy to go back over the top again, so a bit more detail would be helpful
 
Thank you, but never mind!I somehow got my question right.
 
Office_Shredder said:
To be honest, I don't understand your description either :P

You can't release a pendulum with enough potential energy to go back over the top again, so a bit more detail would be helpful
My guess is that in the first case the ball has just enough energy to clear the peg with a slack string, while in the second case the string remains taught. In both cases the peg would be lower than the pendulum pivot, or the pendulum has to be pushed to give it an initial velocity (or both).
 
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