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Wherever there is interaction between two surfaces, the principles of tribology are in action. Without friction, you wouldn’t be able to walk, ride a bike, drive a car, or even write with a pen or pencil. These are examples of places where friction is necessary or beneficial. However, in many cases friction is undesirable as it can cause wear or a loss of power which is where lubrication steps in. Some examples where friction occurs in everyday life are: |