Crank \(C B\) oscillates about \(C\) through a limited arc, causing crank \(O A\) to oscillate about \(O\). When the linkage passes the position shown with \(C B\) horizontal and \(O A\) vertical, the angular velocity of \(C B\) is \(2 \mathrm{rad} / \mathrm{s}\) counterclockwise. For this instant, determine the angular velocities of \(O A\) and \(A B\).

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A 100 mm y TA x FAB 75 mm B- 50 mm B WCB 250 mm-