Question

why friction called a necessary evil?

Answer 1

Hi mate here is your Answer,

Friction is such type of Force which always opposes the motion of any moving body.

It helps us as well as create problem for us.
Such as -

1. It prevents us from slipping in the floor.
2.It helps us in applying breaks in vehicle.

3.It opposes the motion of Coins in carrom board.
4.It eats up Gear parts and create problem.

● Therefore, we conclude that Friction is the need for us as well as harmful for us.

Therefore Friction is a nessesity- evil.

Hope it helps.....you a lot..........☺☺☺

Answer 2

Why is Friction called a necessary evil?

Ans. Friction has both advantages and disadvantages listed below so it is called a necessary

evil.

> Advantages

• It allows us to grip or catch any object

• Helps us to walk comfortably on the floor

• Helps to minimize the speed or stop any moving object

• Helps us to write

> Disadvantages

• It causes wear and tear in objects

• It causes damages to parts of machines and tools and prevents their proper working

• Reduces the speed of moving objects so more force is required

• Friction generates heat and causes wastage of energy.