Question: In Figure three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass.

In Figure 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 = 30.0 kg, mB = 40.0 kg, and mC = 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 .4 move in the first 0.250 s (assuming it does not reach the pulley?

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