For stopping the automobile, we depend on the friction.
Friction is needed for some manufacturing processes. One such process is falt rolling, in which a sheet is passed between two counter-rotating cylinders to reduces its thickness. Sheet is drawn by the friction force.
Friction |
Without friction, we cannot place anything on the floor. Even an ant will be able to push away the object. In the following animation, an ant is pushing a heavy box, which is resting on a frictionless surface. |