Air is held inside a non-insulated cylinder using a piston (mass M=25 kg and area A=100 cm2) and

Q. Air is held inside a non-insulated cylinder using a piston (mass M=25 kg and area A=100 cm²) and stoppers (of negligible area), as shown in the figure. The initial pressure P_i and temperature T_i of air inside the cylinder are 200 kPa and 400°C, respectively. The ambient pressure P¥ and temperature T¥ are 100 kPa and 27°C, respectively. The temperature of the air inside the cylinder (°C) at which the piston will begin to move is 

Ans: 145.00 – 150.00