The $\backslash (3\mathrm{.}50\backslash$mathrm$\{$~kg$\},35\mathrm{.}0\backslash )-$cm$-$diameter disk in $($Figure $1)$ is spinning at $310$ rpm $.$

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Figure

Part A

How much friction force must the brake apply to the rim to bring the disk to a halt in $2\mathrm{.}50$ s $?$

Express your answer with the appropriate units.