When y = 0, arm BC lies in the vertical plane. Consider a situation where is con- stant at 2 rad/s, while 4 = 4 rad/s and j = 12 rad/s2. Concurrently with these rota- tions, the entire assembly is rotating about the vertical axis at the constant rate 9 = 8 rad/s. Determine the angular velocity and angular acceleration of link BC if y = 0 and 8 = 30 at this instant. X = E XA XB B E y As Y B o z z Problems 3.35 and 3.36