Problem 2 (Textbook 2.2) A mechanical system moves from x₁ to x₂ along the Ai path 1 to 2 in Fig. 2.2. Identify the following by areas (for example, the area

under the second curve at position C is expressed as OC20): (a) The change in the energy of the coupling field, AW, (b) The change in co-energy AW. (c) The change in energy supplied by the electrical system, AW (d) The change in energy supplied by the mechanical system, AWm. Figure 2.2 x=X₁ x=x₂ B C λi characteristics in Problem 2.