There are several types of friction that influence spin of the ball in tennis. The sliding friction between the ball and the strings, the static friction between the ball and the strings at the grip phase, the static friction between the main and the cross strings, and the sliding friction between the strings.
1. The soles of your socks wearing out 2. The gears in you care will wear down if not lubricated with oil 3. Holes in your jeans 4. Scraping your knee Harmful friction consists of two surfaces in motion, yet not in harmony with each other or one surface in motion against a fixed surface, which causes a wearing of one or both surfaces. Examples of harmful friction would be an abrasion to the skin from a person sliding on a rug or friction between a foot and a shoe creating heat and a blister in the skin of the foot. This is wrong. DONT USE THIS INFORMATION There are many examples of harmful friction. This can include the scrapes and cuts your encounter when falling down on the sidewalk. This can also be found in engines that are not properly lubricated causing them to heat up and malfunction.
yes friction is supporting
Bowling, curling, and tennis
No, the gas is not harmful.
friction
Examples of harmful forces include physical violence, emotional abuse, discrimination, exploitation, and manipulation. These forces can cause harm to individuals physically, emotionally, mentally, or socially, leading to negative impacts on their overall well-being and quality of life.
friction can be harmful because if you stick 2 objects to rub against eachother for to long it will explode
friction
Harmful friction when flying can occur in the form of air resistance, which can slow down an aircraft and increase fuel consumption. Another example is friction in engine bearings or moving parts, which can cause overheating and mechanical failures. Additionally, friction between flight control components can lead to improper aircraft maneuverability and control issues.
examples of harmful liquids
Yes, friction CAN be harmful, depending on where it occurs. If you'd fall and scrub your knee, that's harmful friction. IF your shoes are chafing and yopu get a blister, that's harmful friction. In a machine, if a bearing becomes warm, that's harmful friction.
it can be harmful when you buy shoes and they are to tight and if your books and binders are really rough and you have a hard time sliding them into your back pack they will rub and cause friction