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प्रश्न
Tick the most appropriate answer.
Force of friction comes into play when a/an
पर्याय
object attempts motion
moving object tries to stop
object is at rest
all of the these
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उत्तर
all of the these
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संबंधित प्रश्न
A charged glass rod attracts a charged plastic straw.
Give an example to illustrate the existence of the force of friction.
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
Tick the most appropriate answer.
Friction is offered by
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
Fill in the blank.
Friction is a type of .................
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
