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I want 5 advantages and 5 disadvantages of friction.please give me in point wise?
Advantages of Friction

(1) It is due to friction between the ground and the feet that we are able to walk.

(2)The brakes of a vehicle cannot work without friction.

(3)Various parts of a machine are able to rotate because of friction between belt and pulley.

(4)The tyres of vehicle are made rough to increase friction.

(5) Nails and screws join various wooden parts due to friction.

(5) In the absence of friction,it will not be possible to write on a paper with a pen or pencil.

Disadvantages of Friction

(1) Wear and tear of the machinery is due to friction.

(2) A large amount of power is wasted in overcoming friction and the efficiency of the machines decreases considerably.

(3) Excessive friction between rotating parts of a machine produces enough heat and causes damage to the machinery.


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