For Question, give a specific example of a system with the energy transformation shown. In these questions, W is the work done on the system, and are the kinetic, potential, and thermal energies of the system, respectively. Any energy not mentioned in the transformation is assumed to remain constant; if work is not mentioned, it is assumed to be zero.

ANSWER: In the above equation the work is converted to the change in thermal energy. The example of this will be, By rubbing our hands, we do some work and as a product we get heat which is a type of thermal energy. In a different analogy, we will consider the 1st law of thermodynamics which shows the energy conservation too. The equation is as follows, dE = dQdW ---------------------(1) It tells that the change in internal energy of a system can be represented by the amount of heat added to it minus the work done by the system. If the change in internal energy is zero, then, The amount of heat added to the system will come out directly as a product of work done. So in a reverse process, the work done on the system will result a temperature release by the system, which is the change in thermal energy. By this way we can understand the proper innards of the the mechanical system.