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प्रश्न
Fill in the blank.
Friction depends upon the ............... of an object.
उत्तर
Friction depends upon the weight of an object.
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संबंधित प्रश्न
When a glass rod is rubbed with a piece of silk cloth the rod ______.
A charged glass rod attracts a charged plastic straw.
Select the correct alternative.
Friction is reduced by
What is the cause of friction?
State two factors which directly affect the force of friction.
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
Define sliding friction
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: We can live very happily if friction is not present in nature.
Reason: The airplane shape is streamlined to reduce the effort of frictional force.
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.
