A mechanism is shown in Figure 3. Crank AB rotates with a constant angular velocity of 4 rad/s (counter-clockwise), the length of AB and BC is 0.6 m and 0.8 m, respectively. At the time instant, the angle between AB and x-axis is 0 = 30, and the bar BC is parallel to the ground. Calculate the angular velocity of the bar BC and the absolute velocity of the block C at this instant. 0.6 m B 0.8 m WAB = 4 rad/s 60 A 30 Figure 3