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Related Concept Videos

Dynamic Equilibrium02:20

Dynamic Equilibrium

62.6K
A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
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Stability of Equilibrium Configuration01:23

Stability of Equilibrium Configuration

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Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
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Stability of Equilibrium Configuration: Problem Solving01:13

Stability of Equilibrium Configuration: Problem Solving

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The stability of equilibrium configurations is an important concept in physics, engineering, and other related fields. In simple terms, it refers to the tendency of an object or system to return to its equilibrium position after being disturbed. The stability of an equilibrium configuration can be analyzed by considering the potential energy function of the system and examining its behavior near the equilibrium point.
Problem-solving in the context of the stability of equilibrium configuration...
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Solution Equilibrium and Saturation01:59

Solution Equilibrium and Saturation

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Imagine adding a small amount of sugar to a glass of water, stirring until all the sugar has dissolved, and then adding a bit more. You can repeat this process until the sugar concentration of the solution reaches its natural limit, a limit determined primarily by the relative strengths of the solute-solute, solute-solvent, and solvent-solvent attractive forces. You can be certain that you have reached this limit because, no matter how long you stir the solution, undissolved sugar remains. The...
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Free Energy and Equilibrium02:56

Free Energy and Equilibrium

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The free energy change for a process may be viewed as a measure of its driving force. A negative value for ΔG represents a driving force for the process in the forward direction, while a positive value represents a driving force for the process in the reverse direction. When ΔGrxn is zero, the forward and reverse driving forces are equal, and the process occurs in both directions at the same rate (the system is at equilibrium).
Recall that Q is the numerical value of the mass action...
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Calculating the Equilibrium Constant02:46

Calculating the Equilibrium Constant

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The equilibrium constant for a reaction is calculated from the equilibrium concentrations (or pressures) of its reactants and products. If these concentrations are known, the calculation simply involves their substitution into the Kc expression.
For example, gaseous nitrogen dioxide forms dinitrogen tetroxide according to this equation:
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Related Experiment Video

Updated: Jan 30, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication

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Postural Stability Variables for Dynamic Equilibrium.

Aviroop Dutt-Mazumder1, Sushmit Dhar2, Courtney Dutt-Mazumder3

  • 1Department of Radiology, University of Michigan, Ann Arbor, USA.

Journal of Nature and Science
|January 15, 2019
PubMed
Summary
This summary is machine-generated.

Human postural control exhibits self-organization and transitions between periodic and chaotic states. This reveals dynamic balance strategies and the interplay of deterministic and stochastic properties in maintaining upright stance.

Keywords:
Coordination DynamicsDynamical Systems TheoryPostural StabilityUpright Balance

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Area of Science:

  • Biomechanics
  • Human Motor Control
  • Dynamical Systems Theory

Background:

  • Traditional studies focused on static balance on stationary surfaces, revealing limited stability configurations.
  • Recent research explores whole-body coordination for dynamic postural stability using moving platforms.

Purpose of the Study:

  • To examine collective variables for postural control within a dynamic systems framework.
  • To investigate self-organization, phase transitions, and intermittent control strategies in dynamic balance.

Main Methods:

  • Analysis of human postural behavior under moving platform conditions.
  • Application of dynamical systems theory to understand balance control mechanisms.

Main Results:

  • Evidence for self-organization in dynamic postural balance.
  • Observed enhanced variability and entropy preceding center of mass and center of pressure coupling phase transitions.
  • Identified intermittent postural control strategies with periodic to chaotic oscillations.

Conclusions:

  • Dynamic postural balance demonstrates self-organizing properties.
  • Emergent postural attractor dynamic states adapt to changing task constraints.
  • Human postural behavior involves deterministic and stochastic properties across multiple timescales.