Define force of friction. What causes friction? What are the advantages and disadvantages of friction? Explain with examples. How can friction be reduced?
Friction is the resistive force that opposes the relative motion between two surfaces in contact. Causes of friction: Friction arises due to the irregularities and microscopic asperities on the surfaces of the materials in contact. These microscopic bumps and ridges interlock, creating resistance to motion. Advantages of friction: It allows us to walk without slipping. … Read more