A thermodynamic system is taken through the cyclic process ABC as shown in the figure. The total work done by the system during the cycle ABC i $s ______$ J.

Question

A thermodynamic system is taken through the cyclic process ABC as shown in the figure. The total work done by the system during the cycle ABC i s ______ J.

G1 Physics · Accepted Answer

The net work done in a cyclic p-V process equals the area enclosed by the cycle. From the graph, ΔV = 5-2 = 3 m³, and ΔP = 300-100 = 200 Pa. The enclosed region is a triangle. Therefore, W = ½(ΔV)(ΔP) = ½×3×200 = 300 J. The direction of the cycle gives positive work by the system. Hence the answer is 300.