by Ron Kurtus (updated 16 March 2023)
Friction is a force that consists of the resistance to motion. It is a section in Mechanics and a subset of Physics.
The knowledge of friction is important for the development of the products we use. It is also an interesting and exciting subject of value in many walks of life. There is a great need for people who understand scientific principles and know how to think logically. Your knowledge and skills in these areas can help you excel in school, advance your career or improve your business.
The purpose of these free online lessons is to give you a start at improving your scientific knowledge of friction that will help you become a champion in physics.
Basics of friction
Coefficient of Sliding Friction
Normal Force in Sliding Friction
Static Sliding Friction on an Incline
External Force and Sliding Friction
Rolling Friction or Resistance
Normal Force in Rolling Friction
Coefficient of Rolling Friction
Rolling Friction and Automobile Tires
Factors in Changing Fluid Friction
Experiments and Science Fair Projects