A coin that has a mass of 20 g rests on a phonograph, Ask an Expert

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A coin that has a mass of 20 g rests on a phonograph turntable that rotates at 33 rev/min. The center of the coin is 16 cm from the turntable axis. If the coin does not slip, what is the minimum value of the coefficient of static friction between the coin and the turntable surface?

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