The discussion revolves around the mechanics of a pendulum interacting with a peg, specifically comparing two scenarios: one where the pendulum completes a loop-the-loop and another where it passes over the peg without the string going slack. The original poster expresses confusion regarding the terminology and concepts involved.
The discussion is ongoing, with participants seeking to understand the original poster's question better. Some guidance has been offered regarding the energy dynamics of the pendulum, but there is no explicit consensus on the interpretation of the scenarios presented.
There appears to be a language barrier affecting the clarity of the original question. Participants are also considering the implications of the peg's position relative to the pendulum pivot and the initial conditions necessary for the pendulum's motion.
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!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).Office_Shredder said: