Physics

7 August, 16:31

A potter's wheel-a thick stone disk of radius 0.500 m and mass 110 kg-is freely rotating at 50.0 rev/min. the potter can stop the wheel in 6.00 s by pressing a wet rag against the rim and exerting a radially inward force of 68.0 n. find the effective coefficient of kinetic friction between the wheel and rag.

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