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प्रश्न
Fill in the blank.
Sliding friction and rolling friction are types of .................. friction.
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उत्तर
Sliding friction and rolling friction are types of kinetic friction.
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संबंधित प्रश्न
Give examples to show that friction is both a friend and a foe.
What is the cause of friction?
State if the following statement is true or false. Correct the statement if it is false.
Like charges always attract each other.
Answer the following in short.
What do you understand by normal force?
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.
Answer the following in detail.
Write the characteristics of the force of friction?
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 |
Explain how friction can be minimized.
We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.
