Solve the below problem:
Q: A 1.8-kg uniform rod is supported by a pin at O and a spring at A and is connected to a dashpot at B. Determine
(a) The differential equation of motion for small oscillations,
(b) The angle that the rod will form with the horizontal 2.5 s after end B has been pushed 23 mm down andreleased.
![1685_Rod.jpg](https://secure.tutorsglobe.com/CMSImages/1685_Rod.jpg)