Answer Happy

The crankshaft AB rotates at ωAB​=40rad/s about the fixed axis through point A, and the disk at C is held fixed in its support at E. (Figure 1)
Determine the angular velocity of rod CD at the instant shown, measured counterclockwise. Express your answer using three significant figures. Enter positive value if the angular velocity is counterclockwise and negative value if the angular velocity is clockwise.