5.102 (old book only)

A vertical piston/cylinder setup has a linear spring mounted on the piston so that at zero cylinder volume a balancing pressure inside is zero. The cylinder contains 0.25 kg of air at 500 kPa and 27°C. Heat is now added so that the volume doubles.

a) Show the process path in a P-V diagram.

b) Find the final pressure and temperature.

c) Find the work and heat transfer.