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प्रश्न
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
उत्तर
It is due to friction between the brakes and the rim of the wheel that it becomes hot.
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संबंधित प्रश्न
Give examples to show that friction is both a friend and a foe.
Define static friction
Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Answer the following in detail.
Write the characteristics of the force of friction?
A moving body comes to rest due to friction alone.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Assertion: Friction always opposes the motion.
Reason: Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
Assertion: We can live very happily if friction is not present in nature.
Reason: The airplane shape is streamlined to reduce the effort of frictional force.
