Springs are widely used in our practical life. For example, springs in ballpoint pen barrels, springs in bicycle brakes and saddles, springs in sofa beds and armchairs, etc.
The study of the properties of springs
The spring is very light and light (regardless of the weight of the spring) after deformation, and the external force can be completely restored to the original state.
Tensile deformation
The spring is deformed under the action of external force, and the spring becomes longer when the tension force is applied, and the tensile deformation occurs
Elastic deformation
When pressure is applied, the spring becomes shorter and the compression set occurs;Regardless of the type of deformation, it is an elastic deformation.
When elastic deformation occurs, the spring should correspond to the elastic force (the magnitude of the elastic force is equal to the magnitude of the external force applied).
ForThe relationship between the elastic force and the deformation of the spring is studied, we take a certain spring for experiment, and the force and deformation applied to the spring are:
Apply to the spring1nThe force of the spring, the deformation of the spring is0.2cm
Apply to the spring2nThe force of the spring, the deformation of the spring is0.4cm
Apply to the spring3nThe force of the spring, the deformation of the spring is0.6cm
It is found that the greater the external force applied, the greater the deformation of the spring.
The springs are increased with each increase1cmThe deformation corresponds to the increased elasticity always5nThis isA constant value.
This is made up of:The nature of the spring itself is determined by the magnitude of the external force applied.
This shows that the elastic force of the spring is proportional to the magnitude of the corresponding deformation, and the same conclusion is still reached in experiments with other springs.