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Two masses, m1 = 4 kg and m2 = 6 kg are connected with a rope...

Two masses, m1 = 4 kg and m2 = 6 kg are connected with a rope and pulled with a horizontal force F=80 N along a rough floor with a kinetics friction coefficient µκ=0.2 (Assume that g = 10 ms-2).
the acceleration (in ms-2) is:

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