The two engineering appliances which uses friction include
Gears experience friction despite it being lubricated as that only reduces the
wear and tear effect. Friction in gear takes place at the interface of
lubricated tooth parts which undergo rolling and sliding movements.
Brakes also experience friction when applied in which the brake pads touch
the brake discs thereby creating friction. The heat generated from the
friction helps to resists and slow down the the motion of the wheels of the
car.
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