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.
Figure P4.65
Determine the maximum displacement of block B if α = 20°, the contact between A and the incline is frictionless, and the spring constant is k = 300 lb/ft.
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