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प्रश्न
Fill in the blank.
We use ball bearings to .................. the friction.
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उत्तर
We use ball bearings to reduce the friction.
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संबंधित प्रश्न
Explain why sportsmen use shoes with spikes.
Write true or false.
The sliding friction is more than the rolling friction.
Select the correct alternative.
Friction is reduced by
List three ways of reducing friction.
Fill in the blank.
Friction depends upon the ............... of an object.
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.
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.
Answer the following in detail.
Write the characteristics of the force of friction?
Assertion: Friction always opposes the motion.
Reason: Whenever one surface moves or tries to move over another surface, the force of friction starts acting on the surfaces.
