Lag1989 problem number 4.28

On a stepped shaft, the radii of which R = 0.2 m and r = 0.1 m are wound in opposite directions of the thread, loaded with the same mass m = 1 kg. The moment of inertia of the shaft relative to its axis of symmetry is J = 2 * 10⁻² kg · m2. The mass of threads and friction in the axis of the block is neglected. Find the acceleration of goods 1 and 2.