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प्रश्न
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
उत्तर
Tension (contact force)
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संबंधित प्रश्न
Give examples to show that friction is both a friend and a foe.
A charged glass rod attracts a charged plastic straw.
The eraser gets smaller and smaller as you use it more and more. Explain the reason.
List three ways of reducing friction.
Answer the following.
What do you understand by a force?
Fill in the blank.
The force of friction acting between two bodies in contact while at rest is known as ................ friction.
Fill in the blank
Rolling friction is ............. than sliding friction.
State if the following statement is true or false. Correct the statement if it is false.
Friction helps us to grip the objects in our hand.
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 |
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.
