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प्रश्न
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
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उत्तर
Bicycles use ball bearings to reduce friction between the pedals and the crank.
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संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Fill in the blank.
We use ball bearings to .................. the friction.
Give an example to illustrate the existence of the force of friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
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Rolling friction is ............. than sliding friction.
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in short.
List the various states of matter that offer frictional force?
A moving body comes to rest due to friction alone.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
