List the disadvantages of friction

Although friction is of great importance in our daily life, yet in many situations, it acts evil.

  • Friction produces heat that causes objects to wear out.
  • Friction makes work tedious. Because of the resistance workers need to exert more effort and energy both to accomplish their work and to overcome resistance.
  • Friction also causes sparks, overheating and machine breakdown.
  • Friction reduces speed. Even airplanes cannot fly as fast as they are able because of air friction.
  • Friction can also make speeding objects to tumble down and cause accidents.
  • Racing cars and other vehicles consume more energy to run fast and overcome the resistance of the roads.

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