A Nonstick coatings on cooking pans.
B. Putting salt or sand on icy roads.
D Putting chalk on your hands before mountain climbing.
are examples of lowering unwanted friction
We may greatly reduce friction by polishing surfaces or by using a lot of lubricants like oil, water, or grease, but we cannot completely eliminate friction.
Nowadays, low friction coatings are a common form of industrial coating. Because of their low coefficient of friction, these coatings are given this moniker. Low coefficient of friction coatings come in a variety of forms, including PTFE, tungsten disulfide, molybdenum disulfide, etc.
A low coefficient of friction value means that less effort is needed to cause sliding than would be needed if the coefficient of friction were to be high.
learn more about friction refer
https://brainly.com/question/24338873
#SPJ9
