Question

advantages and disadvantages of friction

Answer 1

ADVANTAGES OF FRICTION
Friction plays a vital role in our daily life. Without friction we are handicap.
1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it     becomes difficult to walk due to low friction of ice.
2. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail.
3. A horse can not pull a cart unless friction furnishes him a secure Foothold.
DISADVANTAGES OF FRICTION 
Despite the fact that the friction is very important in our daily life, it also has some disadvantages like:
1. The main disadvantage of friction is that it produces heat in various parts of machines. In this way     some useful energy is wasted as heat energy.
2. Due to friction we have to exert more power in machines.
3. It opposes the motion. 
4. Due to friction, noise is also produced in machines.
5. Due to friction, engines of automobiles consume more fuel which is a money loss. 


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Answer 2

advantages of friction are :-
.) it helps to move forward ,by the help of friction we are able to move
.) by the help of friction we can able to stop or start all vehicles on the ground according to our need .

disadvantages of friction are :-

.) duty detection many vehicles on machinery cannot work properly . .

.,) during rainy seasons a cycle do many kind of irritating voices ,this is due to the friction ..

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