As the hydraulic cylinder rotates around O, the ex- posed length l of the piston rod P is controlled by the action of oil pressure in the cylinder. If the cylinder rotates at the constant rate 0 = 60 deg/s and l is decreasing at the constant rate of 150 mm/s, calculate the magnitudes of the velocity v = 125 mm. %3D and acceleration a of end B when. %3D
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