The hydraulic actuator BC of the crane is extending (increasing in length) at a rate of 0....

The hydraulic actuator BC of the crane is extending (increasing in length) at a rate of 0.2 m/s. At the instant shown what is the angular velocity of the crane’s boom AD?

Strategy: Use Eq. (17.8) to write the velocity of point C in terms of the velocity of point A, and use Eq. (17.11) to write the velocity of point C in terms of the velocity of point B. Then equate your two expressions for the velocity of point C.