What is friction? Mention three ways of reducing friction Write down the laws of friction
Answers
Answer:
An opposing force
Explanation:
Friction is an opposing force which resists the motion of a body
*Ways of Reducing Friction*
- By increasing the speed of the object
- By using any lubricant
- By reducing the weight of the object
HOPE IT HELPS YOU!!
The force which always opposes the motion of an object over another object in contact with it , is called friction .
- Friction always occurs between two object contact with each other .
For example , when we push a heavy object on the floor , the friction acts between the body and the floor !!
★ Methods of reducing friction
In some cases , friction doesn't help us . In fact we are needed to reduce it so that we can work easily .
As , friction working between the parts of Machines causes wear and tear between them and doesn't allow them to work smoothly .
so , friction can be reduced by smoothing the surface and it can be done through
- Polishing the surface
- Using lubricant ( like oil or grease ) on the rubbing surfaces .
Friction can also be reduced
- by using wheels to move objects
- by using ball bearings between the moving parts of machines .
★ Laws of friction
First law of friction → : The amount of friction is proportional to the normal force exerted between the surfaces.
Second law of friction → : Friction does not depend on the area of contact between the surface .
Third law of friction → : Friction force also depends on the nature of the contact surfaces .
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