Interactions closed systems through changes of physical properties of objects.
As is known in the closed mechanical system, forces are in equilibrium state. Any closed mechanical system follows the law of conservation of energy.
Consider a system consisting of a magnet attracting the ferromagnetic object through the spring strapped to the wall. The object may be heated using internal heating element. Assume that no heat is radiated. On the object which strapped through the spring on the rod operates the magnetic field of magnet. The spring is stretched by force equal to the force of magnetic attraction of the object to another object.
There are two closed systems. One system – the mechanics, consisting of the magnet, the spring and the working object. Another system – the thermodynamics, which is inside the working object. Moreover, the working object is used in both closed systems.
If a closed system experiencing an external force, then the closed-loop system will cease to be such, and the law of conservation of energy would be executed taking into account external influences on the system. However, the impact on the closed system can provide not only by external forces. Changes of physical parameters of objects within the system also will impact on closed systems. Moreover, the mechanical system will be in closed state, because no external forces were not applied to the system.
Based on previous example, if that working object will be heated above the Curie point, then the force acting on the object will be drastically reduced and the spring will be shrunk. The mechanical closed system will switch to a new state of equilibrium.
Here, the change in the physical properties of an object works like a switch that transforms a closed system from one equilibrium state to another. And the energy spent on heating the working object will not be equal to the work committed by the other closed system for the transition to a new equilibrium state. The law of conservation of energy is working for closed systems, but does not operate between these closed systems. It means the energy, spent on the change in the physical properties of the object into closed system is not equal to the work committed into another closed system in the transition for a new equilibrium state. This conclusion makes a question.
Could be closed system induce work into another closed system without losing own internal energy?
Written by: Aleksandr Belov