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प्रश्न
Fill in the blank.
Weight remaining the same, friction is independent of ............. of surface in contact.
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उत्तर
Weight remaining the same, friction is independent of area of surface in contact.
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संबंधित प्रश्न
Explain why sportsmen use shoes with spikes.
Name the three kinds of friction.
Define static 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.
What do you understand by a force?
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Rolling friction is ........... than sliding friction.
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.
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
