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What are the methods of reducing friction? Explain .

Friction is reduced by adopting the following methods -

  • By polishing the suffaces
  • By applying oil or grease on the surfaces ( or by lubrication)
  • By sprinkling a soft, slippery fine powder on the surfaces as we do on our carrom board.
  • By using wheels, ball-bearings or roller-bearings in machines.
  • By streamlining the body of an object like those of aeroplanes, rockets, ships, etc. Birds and fish also have streamlined bodies.

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The three simple methods are

1) By Lubrication

2) By Using Powders

3) By using streamlined bodies

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METHODS OF REDUCING FRICTION
There are a number of methods to reduce friction in which some are discussed here.
USE OF LUBRICANTS:
The parts of machines which are moving over one another must be properly lubricated by using oils and lubricants of suitable viscosity.
USE OF GREASE:
Proper greasing between the sliding parts of machine reduces the friction.
USE OF BALL BEARING:
In machines where possible, sliding friction can be replaced by rolling friction by using ball bearings.
DESIGN MODIFICATION:
Friction can be reduced by changing the design of fast moving objects. The front of vehicles and airplanes made oblong to minimize friction.

 

I hope it will help u.

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