The slender $\backslash (15-\backslash$mathrm$\{$kg$\}\backslash )$ bar is initially at rest and standing in the vertical position when the bottom end $\backslash ($ A $\backslash )$ is displaced slightly to the right. The track in which it moves is smooth. The bar is constrained to move in the vertical plane. Suppose that $\backslash ($ a$=9\mathrm{.}5\backslash$mathrm$\{$~m$\}\backslash ).$ Neglect the mass of the cord $\backslash ($ B C $\backslash ).($Figure $1)$

Determine the speed at which end $\backslash ($ A $\backslash )$ strikes the corner $\backslash ($ D $\backslash ).$

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

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$\backslash ($ v$\_\{$A$\}=\backslash )$

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