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प्रश्न
Fill in the blank.
.................... is the SI unit of force.
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उत्तर
Newton is the SI unit of force.
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संबंधित प्रश्न
Select the correct alternative.
Friction is reduced by
When you apply brakes, the bicycle stops and the rim of the wheel becomes hot? Explain the reason.
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
Fill in the blank.
Sliding friction and rolling friction are types of .................. friction.
Fill in the blank.
Friction depends upon the ............... of an object.
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in detail.
Define friction and explain how it is useful to us.
A moving body comes to rest due to friction alone.
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 |
Assertion: There is a danger of a vehicle skidding on a wet road.
Reason: The tires of the vehicle lose their grip on the road due to an increase in friction due to the presence of water on the road.
