General Knowledge - Basic General Knowledge - Discussion
Discussion Forum : Basic General Knowledge - Section 1 (Q.No. 26)
26.
Friction can be reduced by changing from
Discussion:
54 comments Page 5 of 6.
Vamsi said:
1 decade ago
To applying the slow moment of force to it, then it is in fast motion.
Chandru said:
1 decade ago
Mass of an object leads to excerting force against the surface while sliding. While rolling an object then the mass gets acceleration and gets momentum with kinetic energy that reduces friction against the surface.
Akshay said:
1 decade ago
Coefficient of rolling friction is always less than that of sliding friction.
Devbrat said:
1 decade ago
Answer is wrong beacause :.
In sliding- surface is contact with surface and more friction than rolling.
In rolling- one point is contacted with surafce at a time so less friction than sliding.
Hence the answer is wrong.
In sliding- surface is contact with surface and more friction than rolling.
In rolling- one point is contacted with surafce at a time so less friction than sliding.
Hence the answer is wrong.
Akhil mishra said:
1 decade ago
More the surface of contact more will be friction sliding involves large surface contact than rolling.
Parveen said:
1 decade ago
There are 4 types of friction
sliding
rolling
limiting-it is self adjusting friction
kinetic
lesser the surface of contact lesser the friction
the coefficient of friction is lesser in rolling fricting
sliding
rolling
limiting-it is self adjusting friction
kinetic
lesser the surface of contact lesser the friction
the coefficient of friction is lesser in rolling fricting
Roshan said:
1 decade ago
Thanks for such understandable explanation with examples.
Sushant said:
1 decade ago
Rolling friction is less than sliding becuse in sliding friction point of contact is not changing of moving body, whereas in rolling point of contact is changing while rolling body is in motion moreover you may find value of coeficient of friction (mu) is less for rolling as compared to sliding
Spandana said:
1 decade ago
Lesser the contact area lesser is the friction.
Vishal joshi said:
1 decade ago
It is done because of contact area which used in sliding is more then rolling. In rolling motion only point contact have been done.
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