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प्रश्न
Match the following.
| Column I | Column II | |
| a) | Static friction | Viscosity |
| b) | Kinetic friction | Least friction |
| c) | Rolling friction | Objects are in motion |
| d) | Friction between the liquid layers | Objects are sliding |
| e) | Sliding friction | Objects are at rest |
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उत्तर
| Column I | Column II | |
| a) | Static friction | Objects are at rest |
| b) | Kinetic friction | Objects are in motion |
| c) | Rolling friction | Least friction |
| d) | Friction between the liquid layers | Viscosity |
| e) | Sliding friction | Objects are sliding |
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संबंधित प्रश्न
A charged glass rod attracts a charged plastic straw.
Name the three kinds of friction.
Define sliding friction
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
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.
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.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
