3) A block (block 2) of mass my = 1.3 kg hangs from the end of a (massless) string which runs over a (massless frictionless) pulley. The other end of that string is connected to another block (block 3) of mass m3 = 1.2 kg on a horizontal frictionless table. Block 3 is connected to another string which is connected to another block (block 1) of mass m, = 2.2 kg on a horizontal frictionless table. The situation is shown below. M1 M3 M , a) Assuming that block 1 and block 3 are sliding to the right (toward the pulley, with the same velocities and accelerations), find the acceleration of block 1. b) Assuming that block 1 is sliding to the right (toward the pulley), find the tension in the string that connects block 1 to block 3. c) Find the tension in the string that connects block 3 to block 2. Notice that your answers to parts b and c should be different