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प्रश्न
Tick the most appropriate answer.
Friction for an object can be reduced by
विकल्प
providing wheels
lubricating
streamlining
all of these
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उत्तर
all of these
APPEARS IN
संबंधित प्रश्न
Friction depends on the ______ of surfaces.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Give three examples to illustrate that friction is a necessary evil.
Define rolling friction
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling friction?
Fill in the blank.
More the roughness of a surface, greater is the ........................
State if the following statement is true or false. Correct the statement if it is false.
Friction helps us to grip the objects in our hand.
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Friction depends on the ______ of two surfaces in contact.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
