Describe the situations in which force of friction is needed.
Difficulty: Easy
Friction is needed to walk on the ground.
- It is risky to run on a wet floor with shoes that have smooth soles. Athletes use special shoes that have extraordinary ground grip. Such shoes prevent them from slipping while running fast.
- To stop our bicycle we will apply brakes. The rubber pads pressed against the rims provide friction. It is the friction that stops the bicycle.