Discuss the below:
Q: Rod AB is welded to the 12-in.-radius plate which rotates at the constant rate ω1 = 6 rad/s. Knowing that collar D moves toward end B of the rod at a constant speed u = 78 in./s, determine, for the position shown,
(a) The velocity of D,
(b) The acceleration of D.
![2252_The velocity of the rod.jpg](https://secure.tutorsglobe.com/CMSImages/2252_The velocity of the rod.jpg)