Initial Conditions:
- Volume of gas: 0.04m3
- Pressure of gas: 0.2 MPa
- Spring constant: 200 kN/m

Explanation:
The initial conditions provided for the piston cylinder device include the volume of gas, pressure of the gas, and the presence of a linear spring with a specific spring constant.

Step 1: Determining the Initial State
The initial state of the gas in the piston cylinder device can be determined using the ideal gas law, which states that PV = nRT. By rearranging the equation, we can calculate the initial number of moles of gas present.

Step 2: Analyzing the Spring Force
The linear spring touching the piston exerts a force on the gas within the cylinder. The force exerted by the spring can be calculated using Hooke's Law, F = kx, where k is the spring constant and x is the displacement of the piston.

Step 3: Equilibrium State
When the system reaches equilibrium, the forces exerted by the gas pressure and the spring force will be equal. This equilibrium state can be analyzed to understand the final conditions of the gas in the piston cylinder device.

Conclusion:
In conclusion, the initial state of the gas in the piston cylinder device can be determined using the ideal gas law, while the spring force exerted on the gas can be calculated using Hooke's Law. Analyzing the equilibrium state of the system will provide insights into the final conditions of the gas in the piston cylinder device.