cp" ' U \"r\" "'""" I/ ""u ' ' ' H 50 Q In Fig. 5-46, three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The three masses are mA 2 30.0 kg, \"13 = 40.0 kg, and mg 2 10.0 kg. When the assembly is released from rest, (a) what is the tension in the cord connecting B and C, and (b) how far does A move in the rst 0.250 s (assuming it does not reach the pulley)? Figure 5-46 Problem 50