Solving a problem in physics section 29 point 88 mechan

88. In a fixed block fastened to the edge of the table, slung the thread to which are attached three cargo masses m1 = 800 g, m2 = 700 g, m3 = 200 g Weight of M = 500 g, the radius R = 0,38 m. Considering the thread weightless and neglecting friction, determine the acceleration of goods and, as well as the distance s, which will be held m3 cargo movement from the beginning to the moment when the kinetic energy of rotation of the unit will TVR = 1.1 J.