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An object is placed on top of a horizontally rotating disk at a distance of 0.2...

An object is placed on top of a horizontally rotating disk at a distance of 0.2 m from the center (axis of
rotation). We observe that the object starts sliding when the frequency of the disk’s rotational motion is 30
revolutions/min. Find the coefficient of static friction between the object and the disk. Use g = 10 m/s2.

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