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How do I find the coefficient of kinetic friction for a pulley?

F=mueN

If a mass of 0.019 kg overcomes the friction in a pulley, is this mue?

Normal force would be 0.20 kg * 9.8?

But it can't be mue, because I am asked to find mue in the question.

F=mueN

If a mass of 0.019 kg overcomes the friction in a pulley, is this mue?

Normal force would be 0.20 kg * 9.8?

But it can't be mue, because I am asked to find mue in the question.

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