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Describlean analyticalmethod foradterminingth workdoneduringthe expansion of gas. |
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Answer» Solution :Consider agascontainingina cylinderof area Aandprovidedwithfrictionlessmovablepiston. P-pressureof the gas , Forceexertedby thegason the piston. `F= PxxA` The gasexpandsandpushesthe piston THROUGHA smalldistancedx. Workdone by thegasdW= Fdx= PAdx= P.dV `:.,dV= A dxto` changein volumeof the gas. The totalworkdone byy the gaswhenits volumeincreasesfrom`V_(1)` to `V_(2)`WILLBE `W= intdW=underset(V_(1))OVERSET(V_(2))(int)PdV` |
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