One key advantage of friction is that it provides the necessary grip for walking without slipping. Friction also helps maintain balance by allowing feet to push off the ground and enables the transfer of energy from the foot to the ground, propelling the body forward.
Types of Friction:
Type 1. Contact Friction
- Static Friction
- Kinetic (Sliding) Friction
- Rolling Friction
Type 2. Fluid Friction
- Viscous Friction
- Air Resistance (Drag)
Type 3. Internal Friction
- Structural Damping
- Material Deformation
Type 4. Surface Friction
- Dry Friction
- Lubricated Friction