A block of mass $4\ \text{kg}$ lies on a smooth horizontal table. A light string tied to it passes over a pulley at the edge of the table and holds a block of mass $2\ \text{kg}$, which hangs freely, as shown in the figure. The pulley is a uniform disc of mass $4\ \text{kg}$, and the string does not slip on it. Taking $g = 10\ \text{m/s}^2$, the acceleration of the blocks, and the tensions in the horizontal and vertical parts of the string, are

Fig. 1: A 4 kg block on a smooth table, joined by a string over a pulley at the edge (a uniform disc of 4 kg) to a hanging 2 kg block.