Chapter Overview
This chapter introduces the concept of friction, a force that resists the motion of objects in contact. It explains the types of friction, factors influencing frictional forces, and real-world applications such as braking systems, walking, and machinery operation. The chapter also discusses methods to reduce friction through lubrication and other techniques.
Important Keywords
- Friction: The resistive force that occurs when two surfaces slide against each other.
- Static Friction: The frictional force that prevents motion between two surfaces at rest.
- Kinetic Friction: The frictional force acting between moving surfaces.
- Coefficient of Friction: A numerical value representing the frictional properties of surfaces.
- Lubrication: The process of reducing friction by applying a substance between two surfaces.
- Normal Force: The perpendicular force exerted by a surface on an object in contact with it.
- Wear: The gradual removal of material from a surface due to friction.