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प्रश्न
Answer the following in short.
Define force. Write its SI unit.
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उत्तर
A push or pull acting upon an object as a result of its interaction with another object is called force. Its SI unit is the newton (N).
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संबंधित प्रश्न
State two factors which directly affect the force of friction.
Give three examples to illustrate that friction is a necessary evil.
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
Tick the most appropriate answer.
Force of friction comes into play when a/an
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
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.
Answer the following in a word or two or in a sentence.
Name the force responsible for opposing the motion between two bodies in contact.
Answer the following in short.
When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.
Is there any possibility of making a special device to measure the magnitude of friction directly?
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
