Rigid Body Kinematics: Angular Acceleration of Connecting Rod

Crank $OA$ ($r = 0.1\,\mathrm{m}$) rotates at constant $\omega_{OA} = 10\,\mathrm{rad/s}$ CCW. At the instant $OA$ is vertical (pointing up), connecting rod $AB$ ($L_{AB} = 0.3\,\mathrm{m}$) is horizontal. From kinematics, $\omega_{AB} = 10/3\,\mathrm{rad/s}$ CW and slider $B$ moves horizontally. Find the angular acceleration $\alpha_{AB}$ of the connecting rod.