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Velocity Question
I just want to verify some thing about velocity. Say we have a spinning disk of radius a. Points of the disk that has the same distance to the center have the same linear velocity right? It travels the circumference of the circle of the chosen radius in a certain time. But different radii's would have different linear velocity. However the angular velocity is the same throughout the entire disk, because it makes the same number of rev/s or else the disk would fly apart some how. Am I correct?
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