Question

Match the diagrams with their popular applications of friction.

• A. Holding things
• B. Heat generation
• C. Wear and tear

Answer 1

• Friction causes wear and tear. As a result, the soles of shoes wear out when used over a long period of time.
• When we hammer a nail into a wall, it is friction that holds the nail in the wall.
• When we rub our hands together, they feel warm. This is because the friction between our hands produces heat.