(a) Slows down or stops the movement of objects A bigger force is needed to overcome the friction so that an object can move faster. Some disadvantages of frictional force in relation to automobiles are that too much friction can end up being a hindrance to the motion. Friction is created when two surfaces slide one on top of the other. Therefore extra energy has to be spent in overcoming friction. If there was no friction, the motion of a body would not cease at all and continue perpetually. We cannot do anything without the force of friction. Due to friction, a nail is fixed in a wall. In this way some useful energy is wasted as heat energy. Due to friction we have to exert more power in machines. Friction Welding (FRW) is a solid state welding process which produces welds due to the compressive force contact of work pieces which are either rotating or moving relative to one another. What causes it? Due to friction, noise is also produced in machines. Friction causes wear and tear of the parts of machinery in contact. Friction Welding | Advantages ,Disadvantages and Applications FRICTION WELDING. 6. if you want make the bicycle speed up, you have to cycle it … This reduces the efficiency of machine. It decreases the life expectancy of moving parts of vehicles. Friction causes wear and tear. It opposes the motion. Due to friction, engines of automobiles consume more fuel which is a money loss. ): Due to friction, a considerable amount of energy (in a form of heat) is wasted in the ball bearings present in shafts, axles, and gears. 2. 5. Disadvantages of Friction (Why Friction is Evil? For example, a bicycle will eventually stop if it not cycled consistently. Find out for yourself why friction is good and bad at the same time. The disadvantages of friction are as follows. Friction spoils the soles of our shoes. Friction is very useful but it has its own disadvantages. I will provide a few examples that will hopefully lead to more ideas for you. Heat produce by friction may be sufficient to cause the abrasion of the skin, resulting in friction burn. Thus their lifetime reduces. 4. Disadvantages 1 It produces heat in various parts of machines. If there was no friction, the motion of a body would not cease at all and continue perpetually. DISADVANTAGES OF FRICTION: Friction always opposes the relative motion between any two bodies in contact. Production of heat, noise and wear in machine parts rubbing against one another. Friction is the force that arises from the contact of two bodies and prevents their relative movement. Disadvantages of Friction 1. The major types of friction clutches are The friction force is used to bring the driven shaft to the proper speed gradually without excessive slipping. Friction causes wear and tear the products we use in day to day life, for example, in shoes, clothes, brake lining materials, gears, and bearings. 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