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प्रश्न
Explain how friction can be minimized.
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उत्तर
- Using lubricants:
- A substance, which reduces the frictional force, is called a lubricant. Example: Grease, coconut oil, graphite, castor oil, etc.
- The lubricants fill up the gaps in the irregular surfaces between the bodies in contact. This provides a smooth layer thus preventing direct contact between their rough surfaces.
- Using ball bearing:
Since the rolling friction is smaller than sliding friction, sliding is replaced by rolling with the usage of ball bearings. We can see lead shots in the bearing of a cycle hub.
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संबंधित प्रश्न
Friction opposes the ______ between the surfaces in contact with each other.
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling 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 detail.
What are the various effects of force? State one example of each.
Fill in the blank
Rolling friction is ............. than sliding friction.
Answer the following in a word or two or in a sentence.
Name a method used to reduce friction.
Answer the following in detail.
Write the characteristics of the force of friction?
Answer the following in detail.
Describe three different ways by which friction can be increased to help us in various situations?
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
Friction depends on the ______ of two surfaces in contact.
