Why does everything goes to equilibrium?

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    Equilibrium
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Discussion Overview

The discussion revolves around the concept of equilibrium in physical systems, exploring why systems tend to reach equilibrium states. Participants examine the nature of equilibrium, the forces involved, and the energy dynamics at play, with a focus on theoretical implications rather than practical applications or experiments.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • One participant questions the fundamental nature of equilibrium, suggesting that it is a concept that requires deeper consideration, particularly regarding the energy dynamics involved.
  • Another participant argues that equilibrium is not a predetermined state but rather an observation of where systems naturally tend to settle, emphasizing that forces act to move systems away from non-equilibrium states.
  • A further contribution clarifies that a system can be in equilibrium while moving at a constant velocity, indicating that equilibrium is not solely about forces being zero but also about the balance of energy.
  • Another viewpoint posits that equilibrium represents a local minimum in energy, where energy loss to the environment leads systems to seek equilibrium states, balancing energy inputs and losses.

Areas of Agreement / Disagreement

Participants express differing views on the nature of equilibrium, with some emphasizing the observational aspect and others focusing on energy dynamics. The discussion remains unresolved, with multiple competing perspectives on why systems tend to reach equilibrium.

Contextual Notes

Participants have not fully defined key terms such as "equilibrium" and "energy," and there are varying interpretations of what constitutes equilibrium in different contexts. The discussion does not resolve the complexities surrounding these definitions.

Skhandelwal
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In everysingle thing in the world, everything tries to set up equilibrium, reaction b/w two objects, etc. But why? It is one of those questions that you never even think about. Like what causes charge. It is strange that now when I am taking AP classes, I have began to think about this simple concept. What causes equilibrium? I mean change always needs energy but this is one change that requires energy to stop it.
 
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You got it the other way around; it's not that thing tend to go to places we declare to be equilibria, but instead, we observed where things like to go to and according to that declared them to be equilibria. Moreover, equilibria are states where the total force is zero. Hence, when something is not at an equilibrium, there will be a force to move it, so it won't stay there.
 
pseudovector said:
...Hence, when something is not at an equilibrium, there will be a force to move it, so it won't stay there.

Something can move at constant velocity and still be in equilibrium.
 
An equilibrium state implies a local minimum in the energy. It requires an addition of energy to the system to move it out of the equilibrium state. Thus things tend to seek an equilibrium as energy is lost to the environment and other factors. The system will finally reach a situation where the various energy inputs equal the various energy losses creating a equilibrium situation.
 

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