Answer to Question #17159 in Mechanics | Relativity for brenda

Question

the three blocks A,B,C, have masses of 5.0 kg, 8.0 kg and 12.0 kg respectively, if the horizontal surface of which block B rests is frictionless, and the system is assumed to start from rest, what is the system is assumed to start from rest. what s the acceleration of the system. the tension in the strings attached to block B, the time that elapses before block C has desce