The base structure of the firetruck ladder rotates about a vertical axis through O with...

The base structure of the firetruck ladder rotates about a vertical axis through O with a constant angular velocity . Determine the magnitudes of the velocity and acceleration of the end B of the ladder.

The base structure of the firetruck ladder rotates about a vertical axis through O with a constant angular velocity At the same time, the ladder unit OB elevates at a constant rate = 7 deg/s, and section AB of the ladder extends from within section OA at the constant rate of 0.5 m/s. At the instant under consideration . Determine the magnitudes of the velocity and acceleration of the end B of the ladder.