A coin is placed 11.0 cm from the axis of a rotating

Chapter 18, Problem 12P

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QUESTION:

Problem 12P

A coin is placed 11.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached and the coin slides off. What is the coefficient of static friction between the coin and the turntable?

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QUESTION:

Problem 12P

A coin is placed 11.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turntable is slowly increased, the coin remains fixed on the turntable until a rate of 36 rpm is reached and the coin slides off. What is the coefficient of static friction between the coin and the turntable?

ANSWER:

Step 1 of 3

Given data

The distance of coin from the center of the turntable is calculated as shown below

The angular velocity is calculated as shown below

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