Questions tagged [equilibrium]
Equilibrium is the condition of a system in which all competing influences are balanced. These can range from forces (static/dynamic equilibrium), to chemical processes (chemical equilibrium) and temperature gradients (thermal equilibrium).
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A case of limiting equilibrium
I have noticed in the solutions of the problems of Friction of a physics book I'm studying from that in cases of limiting equilibrium, the force of friction $f$ to be equal to the coefficient of ...
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Mechanical Equilibrium and Zeroth Law of Thermodynamics
While reading Kardar's 'Statistical Physics of Particles', in section explaining Zeroth law of Thermodynamics, Kardar claims that each of the system's i.e A & B , B & C are assumed to be ...
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Reversible processes in thermodynamics [closed]
These are a few basic questions of mine in thermodynamics whose answer I can't find anywhere.
$1$. How does a quasi static process serve the purpose of thermodynamic equilibrium?A quasi static process ...
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Static equilibrium of linkage [closed]
I have a question regarding the calculation of the forces of a linkage in static equilibrium. Consider the mechanism in the figure. Points A and B can move in all 3 directions (hence they have 3 DoFs ...
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Container divided by adiabatic wall with mass and friction: why is it a quasi-static process?
Thanks to the help of @ChetMiller, the following fact is essentially concluded in this thread. Consider a rigid, thermally isolated container divided by a massless barrier parallel to its base into ...
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Why equilibrium and not steady state?
Equilibrium and steady state are often misunderstood.
Equilibrium: properties are uniform throughout and they do not vary with time.
Steady State: properties at specific location do not vary with time....
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Container divided by frictionless adiabatic wall: reversible or irreversible process?
I have encountered an issue in the following physical situation. Consider a rigid, thermally insulated container divided by a barrier parallel to its base into two parts, left and right, each ...
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Is a body rotating in equilibrium? [duplicate]
If a body is performing a uniform rotation, do we consider it to be in equilibrium because of its constant speed? Or not because it has the centripetal force acting upon it so the sum of all forces is ...
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Entropy and uncertainty principle
I know that entropy depends on the total energy of a system. In the energy-time uncertainty, howeve, energy can be uncertain for an amount of time which is related to the uncertainty of energy by ...
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Zeroth Law of Thermodynamics on Thermometer
I'm confused by how thermometer works based on The Zeroth Law of Thermodynamics. The Zeroth Law of Thermodynamics said that
"If a body, A, be in thermal equilibrium with two other bodies, B and ...
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Determining melting point with equilibrium
A well known problem in thermodynamics is the determination of boiling points from the Van’t Hoff equation using the liquid-vapor phase equilibrium. When taking the temperature dependence of the ...
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Can a body be in both static and dynamic equilibrium simultaneously?
I was just studying statics when I realized that a body can be in both static or dynamic equilibrium at the same time but I am not so sure.
My textbook says that an object at rest is in static ...
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Rotational Equilibrium With Forces acting on only two points
Imagine a rod that is held at angle to the vertical by some hook. The rod is in equilibrium. There would be three forces on this rod - Normal contact, Friction, and the weight of the rod.
I struggle ...
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Work obtained during isentropic expansion in the Carnot cycle versus the work done to gradually lower the outside pressure
We have a Carnot cycle and lets say it is in thermal and mechanical equilibrium with the surroundings before the beginning of the process. I am using the convention that heat brought to the system is ...
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Contradicting Basic and Force definitions of types of Equilibrium
This question is neither a check my work question and nor a homework question, it is a conceptual doubt in a question I found and I have attached a solution just for reference to show how I drew my ...
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