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Chapter 12

Equilibrium and Elasticity

שיווי משקל סטטי - I
שיווי משקל סטטי - 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 ...
שיווי משקל סטטי - II
שיווי משקל סטטי - 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 ...
מרכז הכובד
מרכז הכובד
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 ...
מציאת מרכז הכובד
מציאת מרכז הכובד
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. ...
בעיות שיווי משקל גוף נוקשה - I
בעיות שיווי משקל גוף נוקשה - 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 ...
בעיות שיווי משקל גוף קשיח - II
בעיות שיווי משקל גוף קשיח - 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 ...
דחק
דחק
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 ...
זן ומודולוס אלסטי
זן ומודולוס אלסטי
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 ...
פתרון בעיות על מתח ומתח
פתרון בעיות על מתח ומתח
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 ...
מבנה לא מוגדר
מבנה לא מוגדר
Indeterminate structures refer to structures where internal forces and reactions cannot be determined using only the equations of static ...
גמישות
גמישות
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 ...
פלסטיות
פלסטיות
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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