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July 27, 2015

Homework Help: phyics help nedded

Posted by some one on Friday, October 19, 2012 at 4:17am.

In the figure below, three ballot boxes are connected by cords, one of which wraps over a pulley having negligible friction on its axle and negligible mass. The masses are mA = 24.0 kg, mB = 40.0 kg, mC = 30.0 kg.

(a) When the assembly is released from rest, what is the tension in the cord that connects boxes B and C?
N

(b) How far does box A move in the first 0.250 s (assuming it does not reach the pulley)?
m

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