Describe the situations in which force of friction is needed.

Difficulty: Easy

Friction is needed to walk on the ground.

  1. 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.
  2. 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.