Part A

The $2-$kg spool $\backslash ($ S $\backslash )$ fits loosely on the inclined rod for which the coefficient of static friction is $\backslash (\backslash$mu$\_\{$s$\}=0\mathrm{.}2\backslash ).($Figure $1)$

If the spool is located $0\mathrm{.}25$ m from $\backslash ($ A $\backslash ),$ determine the minimum constant speed the spool can have so that it does not slip down the rod.

Express your answer to three significant figures and include the appropriate units.

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Figure