Absolute Motion, Rotating Mechanisms
Arm AB spins about point A causing arm CD to rotate back and forth about point C.
If LAB = 75 mm and the angular position, q, is a known function of time,
then find the angular velocity, wCD, and the angular acceleration, aCD, of arm CD when t = 0.1 s.
Evaluation of known data:
Since arm CD is pinned to arm AB, the angular position of CD should be related to q. Define the angular position of CD as f, (measured from the vertical axis), then take time derivatives to find velocity and acceleration.