Relation between simple and second pendulum.

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The discussion centers on the relationship between a simple pendulum and a seconds pendulum, specifically defining the latter as one that completes a period in exactly two seconds. The key point is that the length of a seconds pendulum is critical for its operation, with a precise measurement of 0.994 meters required. This length ensures that the pendulum swings with the correct timing. The conversation emphasizes the importance of pendulum length in determining its period. Understanding this relationship is essential for accurate pendulum design and function.
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what is the relation between simple and second pendulum?
 
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Please define what you mean by a second pendulum. If you mean the seconds pendulum where each period is exactly 2 seconds, then the relation is simply of length. A seconds pendulum needs a specific length to operate. (0.994m to be exact)
 
I built a device designed to brake angular velocity which seems to work based on below, i used a flexible shaft that could bow up and down so i could visually see what was happening for the prototypes. If you spin two wheels in opposite directions each with a magnitude of angular momentum L on a rigid shaft (equal magnitude opposite directions), then rotate the shaft at 90 degrees to the momentum vectors at constant angular velocity omega, then the resulting torques oppose each other...

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