what are the disadvantages and advantages friction
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DISADVANTAGES OF FRICTION:
- It always resists the motion, so extra energy is required to overcome it.
- It causes wear and tear of machines.
- It decreases the life expectancy of moving parts of vehicles.
- Since friction is very useful in some cases while harmful in some cases, friction is called a necessary evil.
ADVANTAGES OF FRICTION:
- Friction enables us to walk freely.
- It helps to support ladder against wall.
- It becomes possible to transfer one form of energy to another.
- Objects can be piled up without slipping.
- Breaks of vehicles work due to friction.
- It always resists the motion, so extra energy is required to overcome it.
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The disadvantages of friction are :-
1. Friction produces heat that causes objects to wear out.
2.Friction makes work tedious.
3.Friction also causes sparks, overheating and machine breakdown.
4.Friction reduces speed.
5.Friction can also make speeding objects to tumble down and cause accidents.
The advantages of friction are :-
1.Friction enables us to walk freely.
2.It helps to support ladder against wall.
3.It becomes possible to transfer one form of energy to another.
4.Objects can be piled up without slipping.
5.Breaks of vehicles work due to friction.
It always resists the motion, so extra energy is required to overcome it.
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