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Why is it a necessary evil?

Why is it a necessary evil?

A necessary evil is an evil that someone believes must be done or accepted because it is necessary to achieve a better outcome—especially because possible alternative courses of action or inaction are expected to be worse.

Why friction is called necessary?

Answer Expert Verified friction is said to be a necessary evil because it is useful as well as harmful. friction helps us to walk, write, hold things, lift objects. So it is necessary in our lives. Without friction many essential processes can not be done.

Is friction a necessary evil True or false?

So, friction has so many undesirable effects. But still it is necessary for almost all the functions in our daily lives and for all the machines and their mechanisms. So, the statement that Friction is a necessary evil is true.

Where is friction evil?

Friction is a necessary evil because it has both harmful and beneficial effects. Examples: (i) We can walk easily because ground offers friction. In the less friction walking situation becomes almost impossible. Therefore, friction is necessary even a simple task like walking.

Where did the saying necessary evil come from?

This phrase goes back to the ancient Greek times. The first usage of the phrase “necessary evil” was with reference to Marriage. The act of marriage was seen as a necessary evil because it was really expensive and cumbersome, yet it was the only legal way towards procreation.

Is war a necessary evil?

“War may sometimes be a necessary evil. But no matter how necessary, it is always an evil, never a good. We will not learn to live together in peace by killing each other’s children,” Mr Carter said. If it failed to do so, war would be quite likely, he admitted.

What is the advantage of friction?

Advantages of Friction: It helps us walk on the ground. Brakes in a car make use of friction to stop the car. Asteroids are burnt in the atmosphere before reaching Earth due to friction. It helps in the generation of heat when we rub our hands.

Do we need friction?

Friction can be a useful force because it prevents our shoes slipping on the pavement when we walk and stops car tyres skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.

What are the disadvantages and advantages of friction?

Advantages and disadvantages of friction

  • Friction helps us to walk, turn and stop.
  • Friction helps to wear cap, ring, and belt.
  • Friction help in the transfer of energy.
  • Friction helps in making fire.
  • Friction helps to hold onto objects.
  • Produces unwanted heat.
  • Reduces efficiency of machines.
  • Eco-hazard.

What are the evil effects of friction?

What are the negative effects of friction?

  • The biggest disadvantage of friction is wear and tear that happens as a result of friction.
  • Friction causes wear and tear in machinery parts and also cause wastage of electricity and energy.
  • Friction causes moving objects to stop or slow down.

What is the word for a necessary evil?

An evil that is required for some other end. evil necessity. regrettable necessity. unfortunate necessity.

Why is frictional force called a necessary evil?

Friction is said to be a necessary evil because it is useful as well as harmful. friction helps us to walk, write, hold things, lift objects. So it is necessary in our lives. Without friction many essential processes can not be done. Why frictional force is called a necessary evil?

What happens if there is no frictional force?

With your first step out of the bed, you’d slip and fall. Imagine a world where someone has put oil all over a floor. A world without frictional force is much worse than this. Let alone walking, you wouldn’t be able to use your car or bike since the wheel that helps you move around to do so by using frictional force.

How does friction and frictional force cause wear and tear?

The friction between parts over time is responsible for a majority of the wear and tear in a machine. So if you’re cycling needs to get repaired, you know who to blame. The frictional force also causes most of the injuries.

How does friction and frictional force affect a vehicle?

The friction between the road and the wheel causes the movement of the vehicle and without frictional forces, you’d just stay in one place and spin the wheels. Imagine that you eventually make it your classroom despite the absence of frictional force after a lot of slipping and falling down.