Why Is PV=0 for Solids Despite Exerting Pressure?

Thread starter asdf1
Start date Feb 22, 2006
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Solid

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PV equals zero for solids because, in a solid state, the volume remains constant under pressure, leading to no work done (W = PΔV). Pressure (P) in solids is often considered in terms of stress rather than a direct measure like in fluids. While solids can exert pressure, they do not possess pressure in the same way fluids do, as they do not flow or change volume easily. The discussion highlights the need to clarify the definitions of pressure and volume in the context of solid mechanics. Understanding these concepts is crucial for accurately interpreting the behavior of solids under stress.

Feb 22, 2006

asdf1

Pv

why is PV=0 for a solid?

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Feb 22, 2006

vaishakh

What is P defined by you for solids?
Why don't you clear this beore thinking PV = 0 coz you know that solids certianly have volume.

Feb 23, 2006

asdf1

come to think of it, is P defined by solids?

Feb 23, 2006

Hootenanny

Staff Emeritus

Science Advisor

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Ive heard of a solid body exerting a pressure, but not 'having a pressure'.

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