Boxes A and B are connected to each end of a light vertical rope (Fig. P4.49). A

Question:

Boxes A and B are connected to each end of a light vertical rope (Fig. P4.49). A constant upward force F = 80.0 N is applied to box A. Starting from rest, box B descends 12.0 m in 4.00 s. The tension in the rope connecting the two boxes is 36.0 N. What are the masses of

(a) Box B,

(b) Box A?

Figure P4.49