A potter's wheel having a radius $0\mathrm{.}55$ m and a moment of inertia of $10$ kg $$ m$2$ is rotating freely at $49$ rev$/$min$.$ The potter can stop the wheel in $7\mathrm{.}5$ s by pressing a wet rag against the rim and exerting a radially inward force of $67$ N$.$ Find the effective coefficient of kinetic friction betweA potter's wheel having a radius $0\mathrm{.}55$ m and a moment of inertia of $10$ kg $$ m$2$ is rotating freely at $49$ rev$/$min$.$ The potter can stop the wheel in $7\mathrm{.}5$ s by pressing a wet rag against the rim and exerting a radially inward force of $67$ N$.$ Find the effective coefficient of kinetic friction between the wheel and the wet rag.en the wheel and the wet rag.