Fundamental Problem $8\mathrm{.}2$

Consider the rod shown in $($Figure $1).$ The contact surface at $\backslash ($ B $\backslash )$ is smooth, whereas the coefficient of static friction between the rod and the wall at $\backslash ($ A $\backslash )$ is $\backslash (\backslash$mu$\_\{$s$\}=0\mathrm{.}27\backslash ).$

Figure

Part A

Determine the minimum force $\backslash ($ P $\backslash )$ to prevent the $21-$kg rod $\backslash ($ A B $\backslash )$ from sliding.

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

$\backslash [$

P$=$

$\backslash ]$

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