Question:

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. Model A and B as particles, neglect air resistance, and assume that the cord is inextensible. Determine the maximum speed attained by block B and the distance from the floor where the maximum speed is achieved if $\alpha =35°$, the static and kinetic friction coefficients are ${ \mu }_{ s }$ = 0.25 and ${ \mu }_{ k }$ = 0.2, respectively, and the spring constant is k = 25 lb/ft.