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प्रश्न
Tick the most appropriate answer.
Friction for an object can be reduced by
पर्याय
providing wheels
lubricating
streamlining
all of these
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उत्तर
all of these
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संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Give examples to show that friction is both a friend and a foe.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Define rolling friction
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
More the roughness of a surface, greater is the ........................
Fill in the blank.
Friction depends upon the ............... of an object.
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
