Two blocks A and B weighing 123 and 234 lb, respectively, are released from rest as shown....

Two blocks A and B weighing 123 and 234 lb, respectively, are released from rest as shown. At the moment of release the spring is unstretched. In solving these problems, model A and B as particles, neglect air resistance, and assume that the cord is inextensible. Hint: If B hits the ground, then its maximum displacement is equal to the distance between the initial position of B and the ground.

Figure P3.108

Determine the maximum displacement and the maximum speed of block B if α = 0°, the contact between A and the surface is frictionless, and the spring constant is k = 30 lb/ft.