Equilibrium

The mechanical, thermal, electrostatic, phase or chemical states of equilibrium.

Equilibrium

A system has reached equilibrium when there is no change in the macroscopic state of the system.

Types of Equilibrium

Mechanical Equilibrium

Mechanical systems have reached equilibrium when there is no movement between the systems.

Thermal Equilibrium

Thermodynamic systems have reached equilibrium when there is no heat transfer between the systems. This state of equilibrium requires the systems to have the same temperature.

Electrostatic Equilibrium

Electrostatic systems have reached equilibrium when there is no net charge flow between the systems.

Phase Equilibrium

Material substance systems have reached equilibrium when there is no net phase transformation, like melting, between the systems.

Chemical Equilibrium

Chemical systems have reached equilibrium when there is no net chemical reaction between the system.

Equilibrium TypeDefinitionKey Condition
Mechanical EquilibriumNo movement between systemsStatic state
Thermal EquilibriumNo heat transfer between systemsEqual temperature
Electrostatic EquilibriumNo net charge flow between systemsCharge balance
Phase EquilibriumNo net phase transformationStable phases
Chemical EquilibriumNo net chemical reactionConstant composition
Equilibrium | MEPKit Engineering Tools | MEPKit