A block of mass m, = 42.3 kg on a horizontal surface is connected to a mass m, = 17.7 kg that hangs vertically as shown in the figure below. The two blocks are connected by a string of negligible mass passing over a frictionless pulley. Assume that the horizontal surface is smooth. m m, (a) What is the acceleration (in m/s2) of the hanging mass? (Enter the magnitude only.) (No Response) m/s2 (b) Determine the tension (in N) in the cord. (Enter the magnitude only.) (No Response) N