Friction is necessary : If there is no friction between any two surfaces in contact, then the present day civilization will be no more- as we cannot even walk properly on the earth. There will be no fabrics and garments, no construction of buildings and no furniture, even no cooking and no vehicles. So friction is necessary. But too much friction causes a heavy loss of energy, wear and tear of machinery. Thus, the efficiency of machines will decrease tremendously. So, it is rightly said that friction is a necessary evil.
1.Heat produced in the moving parts of machines causes wear and tear of the parts.
2.A lot of energy is wasted in overcoming friction.
3.Friction causes wear and tear of the soles of shoes.
4.Friction causes the damage of parts of machines and equipments which have to face the force of friction.
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Friction is a necessary evil because:-
a) It can't be completely avoided
b) It is actually useful in many cases
friction is called a necessary evil because we cannot completly avoid it an actually it is used in many cases.
Friction is not always evil; it is quite necessary for many things to work. But sometimes it can be a nuisance; specifically, friction tends to waste energy.
friction
When regions do not receive enough precipitation to account for the amount of water necessary to thrive, it is called a water drought.drought
The strength of the force of friction depends on the types of surfaces involved and on how hard the surfaces push together.
The epicentre is the point ON THE SURFACE. The centre of the earthquake at the point of initial friction/point of origin is called the hypocentre (sp. hypocenter in USA).
When regions do not receive enough precipitation to account for the amount of water necessary to thrive, it is called a water drought.drought
A necessary evil means that friction has advantages as well as disadvantages so it called as necessary evil. Advantages of friction areits helps us to walkto writedriving car, etc,
friction is called a necessary evil because we cannot completly avoid it an actually it is used in many cases.
Friction is called a necessary evil because we cannot completly avoid it an actually it is used in many cases.
Loss of energy. Any way friction is a necessary evil
Yes necessary evil. If friction is totally absent then no wheel could roll on the road. No chance of walking on the floor. We cannot hold even the pen. Same time too much of friction would bring a terrible loss of energy.
because we cant walk , hold articles , we cant write and the construction of house is impossible. but there are some disadvantages in friction.
No. Friction is just necessary for controlling motion.
Because they were black and people were reassest
television "a necessary evil
The duration of Necessary Evil - film - is 1.45 hours.
yes home work is a necessary evil but we should protest about it
Necessary Evil - film - was created on 2008-12-31.