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प्रश्न
Fill in the blank.
We use ball bearings to .................. the friction.
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उत्तर
We use ball bearings to reduce the friction.
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संबंधित प्रश्न
Give three examples to illustrate that friction is a necessary evil.
Tick the most appropriate answer.
Force of friction comes into play when a/an
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Tick the most appropriate answer.
Friction for an object can be reduced by
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Explain how friction can be minimized.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Friction depends on the ______ of two surfaces in contact.
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.
