Advertisements
Advertisements
प्रश्न
Answer the following in short.
Define force. Write its SI unit.
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).
APPEARS IN
संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Sometimes, a crackling sound is heard while taking off a sweater during winters. Explain.
Answer the following in short.
What do you understand by normal force?
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
Fill in the blank.
Friction depends upon the ............... of an object.
Fill in the blank.
Friction is a type of .................
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Why is a ball bearing used in a cycle hub?