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Chapitre 12

Équilibre et élasticité

Équilibre statique - I
Équilibre statique - I
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This ...
Équilibre statique - II
Équilibre statique - II
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or ...
Centre de gravité
Centre de gravité
The center of gravity (COG) of an object is the point where the object's total weight is considered to be concentrated. Knowing the location of the ...
Trouver le centre de gravité
Trouver le centre de gravité
The center of gravity of a body is an imaginary point where the body's total weight is assumed to be concentrated, and the body is perfectly balanced. ...
Résoudre les problèmes d'équilibre d'un système matériel - I
Résoudre les problèmes d'équilibre d'un système matériel - I
A rigid body is said to be in static equilibrium when the net force and the net torque acting on the system is equal to zero. To solve for rigid body ...
Résoudre les problèmes d'équilibre d'un système matériel - II
Résoudre les problèmes d'équilibre d'un système matériel - II
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero. Consider two children sitting on a ...
Contrainte
Contrainte
When a force is applied on a body, it undergoes deformation. In order to restore the body to its original shape and/or size, an opposite or restoring ...
Effort et module d'élasticité
Effort et module d'élasticité
The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or ...
Résolution de problèmes liés au stress et à la tension
Résolution de problèmes liés au stress et à la tension
Stress is a quantity that describes the magnitude of a force that causes deformation, generally defined as internal force per unit area. When forces pull ...
Structure indéterminée
Structure indéterminée
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static ...
Élasticité
Élasticité
Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing ...
Plasticité
Plasticité
Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. ...
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