What is elasticity
the shape or volume change of an object under the action of force is called deformation. When the external force stops acting, the deformation that can be recovered is called elastic deformation. In order to restore the original state of a deformed object, it is necessary to exert a force on the object in contact with it. This effect is called elasticity. That is, within the scope of elastic limit, the force proced by an object to the applied force that deforms the object is called elastic force.
stands for: tension pressure support force thrust tension
represents: Tension
pressure
supporting force
thrust
tension
The shape or volume change of an object under the action of force is called deformation. When the external force stops acting, the deformation that can be recovered is called elastic deformation. The elastic deformation of the object will proce a force on the object in contact with it. This force is called elasticity
a series of social proction and life activities can be carried out by using elastic force, which has size, direction and action point. For example, the tall building needs to lay a solid foundation, and the bridge design needs to accurately calculate the stress of each part; Tug of war needs to use a thicker rope to prevent excessive tension leading to fracture; A thick steel wire should be added to the center of the high-voltage line to support a larger erection span; Athletes proce explosive power in an instant; Wait
in addition, our commonly used folders, self closing doors, clocks and clocks, mechanical timers, rubber bands, fitness thrusters, spring scales, vehicle shock absorbers, pull switches and elastic belts are all made according to the elastic principle
the elastic force is proced between the objects which are in direct contact and have elastic deformation. Generally speaking, pressure, supporting force and pulling force are elasticity. The direction of elasticity is always opposite to the direction of deformation. The direction of pressure or supporting force is always perpendicular to the supporting surface and points to the pressed or supported object
Generally speaking, the pulling force is also elastic. The pulling force of the rope is the elastic force of the rope to the object pulled. The direction is always along the rope and points to the direction of the rope contraction When the elastic deformation of the spring occurs, the elastic force F is proportional to the length x of the spring extension (or shortening), that is, f = KX. Where, K is called the stiffness coefficient of the spring (also known as the obstinacy coefficient or elasticity coefficient), which is numerically equal to the elastic force of the spring when it extends (or shortens) the unit length. The unit is Newton / meter and the symbol is n / m. The value of K is related to the properties of the material. The difference between soft and hard springs means that their stiffness coefficients are different, and the stiffness coefficients of different springs are generally different. This law was discovered by hooker, a British scientist. It is called hooker's law The relationship between the elastic force and the deformation is as follows: within the elastic limit, the greater the deformation, the greater the elastic force; When the deformation disappears, the elasticity disappears. For tensile deformation (or compression deformation), the greater the length of elongation (or shortening), the greater the elastic force. For bending deformation, the more severe the bending, the greater the elastic forcethe elastic force is generated between the objects which are in direct contact and have elastic deformation. Generally speaking, pressure and support are elastic. The direction of pressure or supporting force is always perpendicular to the supporting surface and points to the pressed or supported object
generally speaking, tensile force is also elastic force. The pulling force of the rope is the elastic force of the rope to the object pulled. The direction is always along the rope and points to the direction of the rope contraction
when a spring is elastically deformed, the elastic force F is directly proportional to the length x of the spring extension (or shortening), that is, K in F = KX is called the stiffness coefficient of the spring, and the stiffness coefficients of different springs are generally different. This law was discovered by hooker, a British scientist. It is called hooker's law
e to the elastic deformation of an object, the force on the object in contact with it is called elasticity, including supporting force, pulling force, pressure, etc. The direction of the elastic force is perpendicular to the contact surface (or section) and opposite to the deformation direction of the applied object
it can be measured with a spring dynamometer
elastic force is a contact force. Elastic force can only exist in the place where objects contact each other, but it does not necessarily have the effect of elastic force between objects that contact each other.