Q2) A piston-cylinder device contains 0.05 m of a gas initially at 200 kPa. At this state, a linear spring that has a spring constant of k-180 kN/m is touching the piston but exerting no force on it. Now heat is transferred to the gas, causing the piston to rise and to compress the spring until the volume inside the cylinder becomes 0.15 m. If the cross-sectional area of the piston is 0.25 m, determine the final pressure inside the cylinder.