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प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
Friction has no relation with our walking or running.
विकल्प
True
False
उत्तर
False.
Friction helps us with our walking or running.
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संबंधित प्रश्न
Give examples to show that friction is both a friend and a foe.
Write true or false.
The sliding friction is more than the rolling friction.
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
- the static friction
- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
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.
Weight remaining the same, friction is independent of ............. of surface in contact.
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Answer the following in detail.
Define friction and explain how it is useful to us.
A moving body comes to rest due to friction alone.
Rolling friction is slightly greater than sliding friction.
Complete the analogy.
Knot in a thread : _____ friction : : Ball bearing : _____ friction
