Give examples to show how friction can be beneficial.

1) when walking (without it, people would just slide),
2) when crushing (for example, grinding flour, grinding minerals),
3) when lighting a fire with a match or the wheel of a lighter,
4) adhesion of automobile wheels to the road
5) lathe work.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.