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प्रश्न
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
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उत्तर
Smoother the surface, lesser is the frictional force offered by it.
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संबंधित प्रश्न
Give an example to illustrate the existence of the force of friction.
Name the three kinds of 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.
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Friction depends upon the ............... of an object.
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
Answer the following in detail.
Write the characteristics of the force of friction?
A moving body comes to rest due to friction alone.
In the following figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
Analogy
Objects placed at rest on earth: ______:: Bodies slide over the surface on other body: ______.
