We revisit work as force over displacement and extend it to fluids. For fluids under pressure, work is calculated as force times area and displacement, or W=−∫PdV, where the negative sign indicates wo...We revisit work as force over displacement and extend it to fluids. For fluids under pressure, work is calculated as force times area and displacement, or W=−∫PdV, where the negative sign indicates work done on the system during compression. In constant-pressure cases, work simplifies to W=−PΔV. Graphical interpretation shows work as the area under the pressure-volume curve, useful for visualizing energy exchanges in thermodynamic processes.
