(a) Consider the 200 N weights that is fitted into a frictionless piston cylinder with cross sectional area of 0.0005 m² as shown in Figure 5. The air inside the cylinder is heated to 200° C at constant pressure causing the piston to rise. Take the atmospheric pressure as 100 kPa, cp = 1005 J/kg K, cv = 718 J/kg K and R = 287 J/kg K. Determine:
WEIGHT 200 N
AIR 20°C
4 m
AREA 0.0005 m²
Figure 5: Frictionless Piston fitted in Cylinder
i. the pressure throughout
ii. the mass of air in gram
iii. the change in internal energy
iv. the change in volume
