Question: The system shown starts from rest, and the length of the upper cord is adjusted so that A, B, and C are initially at the

The system shown starts from rest, and the length of the upper cord is adjusted so that A, B, and C are initially at the same level. Each component moves with a constant acceleration. Knowing that when the relative velocity of collar B with respect to block A is 40 mm/s downward, the displacements of A and B are 80 mm downward and 160 mm downward, respectively, determine(a) The accelerations of A and B,(b) The change in position of block D when the velocity of block C is 300mm/supward D C

D C

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