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प्रश्न
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.
पर्याय
True
False
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उत्तर
True
APPEARS IN
संबंधित प्रश्न
Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why?
State two factors which directly affect the force of friction.
Give three examples to illustrate that friction is a necessary evil.
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.
Which type of force acts on a string pulled from both ends?
Tick the most appropriate answer.
Friction for an object can be reduced by
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Answer the following in detail.
Describe three different ways by which friction can be increased to help us in various situations?
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
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.
