Problem 1.60

In the arrangement of Fig. 1.9 the masses $m_{0}, m_{1},$ and $m_{2}$ of bodies are equal, the masses of the pulley and the threads are negligible, and there is no friction in the pulley. Find the acceleration w with which the body $m_{0}$ comes down, and the tension of the thread binding together the bodies $m_{1}$ and $m_{2},$ if the coefficient of friction between these bodies and the horizontal surface is equal to $k$. Consider possible cases.