1. Two blocks are linked together through a set of three pulleys. The weight of box A and B are 250 lb and 100 lb, respectively. When box A is

Two blocks are linked together through a set of three pulleys. The weight of box A and B are 250 lb and 100 lb, respectively. When box A is dragged, there is a coefficient of kinetic friction uk = 0.25. Box B is on rollers and there is no friction. If box B is pulled with a force of 85 lb, (a) what is the acceleration of box A and (b) what is the tension in the rope? Picture attached in the file