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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 depends on the ______ of surfaces.
Suppose your writing desk is tilted a little. A book kept on it starts sliding down. Show the direction of frictional force acting on it.
Write true or false.
The sliding friction is more than the rolling friction.
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
List three ways of reducing friction.
Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
Fill in the blank.
The force of friction acting between two bodies in contact while at rest is known as ................ friction.
Tick the most appropriate answer.
Friction produces
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
