What are the effects of the lower spring?

Springs are common to us. We may have seen them at the roadside, at home and in factories. It often appears in our shop life, so people are not strange to her. Springs can be divided into universal springs and pressure regulating springs. What are their respective functions? If you don't know, come and have a look.
The spring has the effect of impact energy. For example, in various vehicles, there are springs equipped with a certain buffer, as well as various shock absorption springs, which can also store energy well. In daily life, we often have gun bolt springs, clock springs, etc. With the use of springs, people can also test the strength. For example, a spring is installed in the dynamometer.
With the spring, we can also perform many operations. In a word, the spring is not impressive, but it is very helpful to our life. Without the spring, some work in life cannot be completed.