Engineering System Constants for Perfect Gas

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The discussion centers on understanding the relationships between system constants for a perfect gas, also referred to as an ideal gas. Key concepts include the ideal gas law, which relates pressure, volume, temperature, and the number of moles of gas. Participants emphasize the importance of grasping the definitions and behaviors of ideal gases to clarify these relationships. The conversation also highlights the need for adherence to forum guidelines when seeking assistance. A solid understanding of these principles is essential for explaining the system constants effectively.
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Homework Statement
I have to explain the relationships between system constants for a
perfect gas.
Relevant Equations
none
Q) I have to explain the relationships between system constants for a
perfect gas.

Hi
can somebody explain this to me. I am kind of confused what this means and where to start and what to do.
Also not 100% sure what a perfect gas is.
 
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Thread 'Why wasn’t gravity included in the potential energy for this problem?'

Thread 'Why wasn’t gravity included in the potential energy for this problem?'

I’m looking at the attached vibration problem. The solution in the manual includes the spring potential energy but does NOT include the gravitational potential energy of the hanging mass. Can someone explain why gravitational potential energy is not included when deriving the equation of motion? I tried asking ChatGPT but kept going in circles and couldn't figure out. Thanks!
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