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प्रश्न
Fill in the blank.
Friction depends upon the ............... of an object.
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उत्तर
Friction depends upon the weight of an object.
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संबंधित प्रश्न
Give an example to illustrate the existence of the force of friction.
Name the three kinds of friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
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
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in detail.
Define friction and explain how it is useful to us.
How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?
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: There is a danger of a vehicle skidding on a wet road.
Reason: The tires of the vehicle lose their grip on the road due to an increase in friction due to the presence of water on the road.
