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Question: A small button placed on a horizontal rotating platform with diameter 0.315 m will revolve with the platform when it is brought up to a speed of 28.0 rev/min, provided the button is no more than 0.140 m from the axis.
Part A: What is the coefficient of static friction between the button and the platform?
I need help to find the coefficient of static friction between the button and the platform.
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