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प्रश्न
Answer the following in detail.
Write the characteristics of the force of friction?
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उत्तर
Characteristics of the force of friction are :
- Friction opposes the direction of motion.
- It depends on the nature of the surface that is in contact. Rough surfaces offer a greater degree of friction as compared to smooth surfaces. More the roughness of a surface, the greater is the friction.
- Friction depends upon the weight of the object – greater is the weight of the object, greater is frictional force it faces.
- Friction is independent of the area of the surface in contact when the weight remains unchanged.
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संबंधित प्रश्न
Write true or false.
Liquids offer more friction than the gases.
Select the correct alternative.
Friction is reduced by
Tick the most appropriate answer.
Force of friction comes into play when a/an
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Tick the most appropriate answer.
Friction produces
Fill in the blank.
Rolling friction is ........... than sliding friction.
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Answer the following in short.
List the various states of matter that offer frictional force?
Answer the following in detail.
Define friction and explain how it is useful to us.
