In Section 16.4, we asserted that the work done in any cyclic process is equal to the...

In Section 16.4, we asserted that the work done in any cyclic process is equal to the area enclosed by the path on a P–V plot. In Example 16.6, we proved this assertion for a cyclic process described by a rectangular path. Prove this result for a path of any shape. Hint: Use a graphical argument involving area.

(reference example 16.6)