Question 2 A piston-cylinder-spring arrangement as shown in Figure 4 contains 1.5 kg of steam at 1.0 MPa and 250 C. The steam is cooled till the piston rests on an uncompressed spring when the total volume is 0.2 m. The spring constant is 100 kN/m. Upon further cooling the spring is compressed a distance of 0.5 m. The cross-sectional area of the piston is 0.1 m Paton Cylinder 0.5 m V, 0.2 m Spring V Figure 4 (a) Draw the P-v diagram and show how the states change from initial to final. (b) Calculate the system temperature and the dryness fraction of the liquid-vapour mixture when the piston just touches the spring. (c) Calculate the final temperature and pressure at the end of the entire process. Pistes Cylinder V, 0.2 0.5 m Spring