Solve the below problem:
Q: A slender rod AB of mass m is attached to two blocks A and B which can move freely in the guides shown. Knowing that the spring is unstretched when y = 0, determine the value of y corresponding to equilibrium when m = 12 kg, l = 750 mm, and k = 900 N/m.
![975_Slender rod-spring is unstretched.jpg](https://secure.tutorsglobe.com/CMSImages/975_Slender rod-spring is unstretched.jpg)