A ride in an amusement park rotates to point A which in turn

A ride in an amusement park rotates to point A. which in turn rotates respect to point O as shown in Figure 5. Assuming that the arms AB and OA are 2 m- and 12 m-long, respectively Determine the absolute velocity of point B (with respect to point O); the absolute acceleration of point B (with respect to point O)

>> The picture is not clear

>> Please specify the points O, A and B and the angular velocity and angular acceleration.