The two ends of link $\backslash ($ A B $\backslash )$ of length $2\mathrm{.}7$ are hinged to two identical wheels of radius $0\mathrm{.}9.$ Wheel O is rolling without slipping on the horizontal ground with a constant clockwise angular velocity $\backslash (\backslash$omega$\_\{$O$\}\backslash ),-2\mathrm{.}1.$ Wheel $\backslash ($ A $\backslash )$ is also rolling without slipping. Determine the angular velocity of bar $\backslash ($ A B $\backslash )$ when point $\backslash ($ B $\backslash )$ makes an counter$-$clockwise angle, $5\mathrm{.}6,$ with respect to vertical, e$.$g$.,$ theta $\backslash (=0\backslash )$ as shown.