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प्रश्न
Is there any possibility of making a special device to measure the magnitude of friction directly?
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उत्तर
Yes. Tribometer is a special device to measure the magnitude of friction directly.
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संबंधित प्रश्न
Friction depends on the ______ of surfaces.
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
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- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
Tick the most appropriate answer.
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Bicycles use ...................... to reduce friction between the pedals and the crank
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.
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Why is a ball bearing used in a cycle hub?
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.
Complete the analogy.
Knot in a thread : ______ friction :: Ball bearing : ______ friction.
