Name: types of equilibrium in forces
Uploaded: 2023-09-22T11:49:20.000Z
Duration: 1 min 30 s
Channel: JoVE

An object&#39;s equilibrium state can be categorized based on the force systems acting on it. They are collinear, coplanar concurrent, and coplanar non-concurrent forces.
Consider two individuals exerting equal and opposite forces while pulling a rope. The two forces acting on the rope are collinear such that the net force on the rope is zero. The system is in equilibrium.
In a coplanar concurrent force system, all the forces meet at a single point on the same plane.
Here, these forces can be resolved into their horizontal and vertical components.
For a system to remain in equilibrium, the upward and downward vertical forces must balance. Similarly, the leftward and rightward horizontal forces must also be equal and oppositely directed.
In a coplanar non-concurrent force system, the forces acting on the object are parallel. Here, the moment due to F3 is clockwise and is balanced by an anticlockwise moment due to F2.
Similarly, F1 is counterbalanced by the object&#39;s weight and the net moment and the net force on the object are zero, maintaining the equilibrium.

categories of equilibrium

Categories of Equilibrium

Equilibrium is a crucial concept in physics, enabling us to understand how forces interact with bodies to produce no or constant motion. In two-dimensional equilibrium, force systems can be classified into different categories based on their characteristics.
One of the categories of equilibrium is collinear equilibrium, which involves forces acting along a straight line. This type of equilibrium requires only one force equation in the direction of the forces, as the other equations are automatically satisfied.
Another category is the coplanar concurrent equilibrium, in which all the acting forces meet at a single point in the same plane. In this category, the forces can be resolved into their horizontal and vertical components to determine equilibrium. The vertical and horizontal forces should have an equal magnitude and be directed oppositely to balance each other.
The coplanar non-concurrent equilibrium category involves forces that are parallel but not concurrent to each other. In this type of equilibrium, the moments due to the forces are balanced, resulting in zero net force on the object. For this to happen, the moments generated by the forces should be equal but opposite in direction.
Finally, general equilibrium is the most complicated category, involving any number of forces not necessarily in one plane. This type of equilibrium requires two force equations and a moment equation to obtain a solution.

Equilibrium is a crucial concept in physics, enabling us to understand how forces interact with bodies to produce no or constant motion. In ...

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Equilibrium of a Particle

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types of equilibrium in forces

Equilibrium in physics describes how forces act on a body so it stays still or moves at a constant speed. In two-dimensional force systems, equilibrium can be grouped into several categories based on how the forces are arranged.

Collinear equilibrium is the simplest case. The forces act along one straight line, so only one force equation is needed in the direction of those forces. The other equations are already satisfied.

Coplanar concurrent equilibrium is another category. In this case, all the forces meet at one point in the same plane. The forces can be split into horizontal and vertical parts to check balance. The horizontal and vertical forces must be equal in magnitude and opposite in direction.

Coplanar non-concurrent equilibrium involves parallel forces that do not meet at one point. Here, the moments, or turning effects, from the forces must balance. The moments should be equal and opposite so the object has zero net force.

General equilibrium is the most complex category. It includes any number of forces that do not have to lie in one plane. Solving this case requires two force equations and one moment equation.

Types of Equilibrium in Forces

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free-body diagram

Free-Body Diagrams for Force Analysis

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Coplanar forces act on an object in the same plane. To analyze this kind of system, each force is resolved into x and y components using Cartesian vector form and vector algebra. This makes it possible to test whether the object is in equilibrium. A coplanar system is in equilibrium when the resultant force is zero. That means the sum of the forces in each direction must also be zero. If the forces do not balance, the object is not in equilibrium and will accelerate in the direction of the net...

Equilibrium in physics describes how forces act on a body so it stays still or moves at a constant speed. In two-dimensional force systems, equilibrium can be grouped into several categories based on how the forces are arranged. Collinear equilibrium is the simplest case. The forces act along one straight line, so only one force equation is needed in the direction of those forces. The other equations are already satisfied. Coplanar concurrent equilibrium is another category. In this case, all...

key terms and concepts

Explore collinear, coplanar concurrent, coplanar non-concurrent, and general equilibrium. Learn how force and moment balance work in physics.

Types of Equilibrium in Forces | JoVE K12

JoVE Core Mechanical Engineering offers concise, easy-to-understand animated videos covering key topics such as equilibrium, forces, truss analysis, and structural mechanics. Explore their real-world applications, and witness these concepts in action through scientist-led experiments.

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Types of Equilibrium in Forces

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