91影视

The figure is a PV diagram. That means the graph of pressure verses volume. So, the area the curve in the PV diagram will give the net work output. Therefore, you need to calculate the area of 鈭嗮潗答潗叼潗�$鈭�ABD$.

The area of a triangle is equal to the half of the product of its base and height.

Here, b is the base andh is the height of the triangle.

The base and height of the triangle corresponds to the change in pressure and the change in volume, respectively.

Therefore, the net work output of heat engine that follows the path ABDA is 2400 J.

Since the area under the graph gives net work output, the area under the curve will have a larger net work output. Here, the net work output along the path ABCDA is equal to the area of the quadrilateral ABCD.

Therefore, the net work output along ABCDA is larger, because of the area contribution of 鈭嗮潗叼潗娥潗� along with 鈭嗮潗答潗叼潗� while in the path ABDA, only area of 鈭嗮潗答潗叼潗� contributes to the total area.

So, the area under the curve of 饾惔饾惖饾惙饾惔 is smaller than that of ABCDA , which results in a smaller work output.