# Difference between pendulum with a peg

• *best&sweetest*
In summary, the conversation discusses the difference between a pendulum completing a loop-the-loop with a peg and without a peg, and the issue of potential energy and initial velocity. The speaker also requests for a simpler explanation of the concept.
*best&sweetest*
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!

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).

## 1. What is the difference between a pendulum with a peg and a regular pendulum?

A pendulum with a peg refers to a pendulum that has a small peg attached to its bottom, while a regular pendulum does not have this feature. The peg serves as a point of attachment for the pendulum's string or rod.

## 2. What is the purpose of the peg in a pendulum?

The peg in a pendulum serves to stabilize the motion of the pendulum by reducing the amount of air resistance or friction between the string and the point of attachment. This allows for more accurate and consistent swings.

## 3. How does the peg affect the period of the pendulum?

The addition of a peg to a pendulum does not affect its period, which is the time it takes for one complete swing. The period of a pendulum is determined by its length and the force of gravity, not the presence of a peg.

## 4. Can a pendulum with a peg be used for experiments or demonstrations?

Yes, a pendulum with a peg can be used for experiments or demonstrations, just like a regular pendulum. In fact, the peg can make the pendulum more stable and therefore better for demonstrating the principles of simple harmonic motion and oscillation.

## 5. Are there any disadvantages to using a pendulum with a peg?

One disadvantage of using a pendulum with a peg is that it may be more difficult to adjust the length of the string or rod, as the peg serves as a fixed point of attachment. Another potential disadvantage is that the peg may add weight to the pendulum, which could slightly affect its period. However, these disadvantages are minimal and do not significantly impact the overall function of the pendulum.

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