The linkage of Sample Problem 5/8 is repeated here. Crank \(C B\) has a constant counterclockwise angular velocity of \(2 \mathrm{rad} / \mathrm{s}\) in the position shown during a short interval of its motion. Determine the angular acceleration of links \(A B\) and \(O A\) for this position. Solve by using vector algebra.

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A 100 mm y TAB 75 mmC rB 50 mm B WCB X 250 mm