Why do we need to increase friction?

We need to increase friction because it helps us in daily life in the following way :

1. Friction between our feet or footwear and the ground helps us to walk without slipping.
2. The friction between treaded tyres and rough surface of the road enables vehicles to move safely on the road.
3. Friction between the brake-shoe and the wheel slows down or stops a moving vehicle.
4. Friction between a pencil or a pen and paper helps us to write. It is friction that allows your teacher to write on the blackboard.
5. We are able to light a matchstick, cut anything, tie a knot or fix a nail on the wall because of friction.
6. We are able to hold objects with our hands due to friction.
7. We rub our hands in winter to make them warm as friction produces heat.