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प्रश्न
Write true or false.
Liquids offer more friction than the gases.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
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.
Fill in the blank.
.................... is the SI unit of force.
Tick the most appropriate answer.
Friction produces
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Rolling friction is ........... than sliding friction.
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.
In figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
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.
