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प्रश्न
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
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उत्तर
When we roll an object on a surface, the friction produced between the object and the surface is called rolling friction. Example: when we pull our large suitcases on wheels, rolling friction comes into play. The wheels reduce friction and cut down a lot of effort required to move the suitcase (Rolling friction is less than sliding friction).
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संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Fill in the blank.
We use ball bearings to .................. the friction.
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
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Weight remaining the same, friction is independent of ............. of surface in contact.
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The force of friction acting between two bodies in contact while at rest is known as ................ friction.
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Friction is a type of .................
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
A moving body comes to rest due to friction alone.
How do you feel when you touch a nail immediately after it is hammered into a wooden plank? Why?
