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Chapter 12

Equilibrium and Elasticity

Статическое равновесие - I
Статическое равновесие - 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 ...
Статическое равновесие - II
Статическое равновесие - 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 ...
Центр тяжести
Центр тяжести
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 ...
Нахождение центра тяжести
Нахождение центра тяжести
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. ...
Проблемы равновесия твердого тела - I
Проблемы равновесия твердого тела - 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 ...
Проблемы равновесия твердого тела - II
Проблемы равновесия твердого тела - 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 ...
Ударение
Ударение
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 ...
Деформация и модуль упругости
Деформация и модуль упругости
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 ...
Решение задач по напряжению и деформации
Решение задач по напряжению и деформации
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 ...
Неопределенная структура
Неопределенная структура
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static ...
Эластичность
Эластичность
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 ...
Пластичность
Пластичность
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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