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How does a lubricant help in decreasing ...

How does a lubricant help in decreasing friction ?

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Lubricant gets filled in the irregularities and thus forms a layer in between the two surfaces. Under such circumstances firm interlocking is not possible. Therefore, there is a decrease in force of faction.
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  1. Comment on the statement ‘friction is necessary evil’.

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  2. It is easier to than push.

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  3. How does a lubricant help in decreasing friction ?

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  4. To slide a heavy box, we generally left it a bit to place a metallic p...

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  5. Why has a horse to pull a cart harder during the first few steps of hi...

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  6. How do we save petrol when the tyres of the motor cycle are fully infl...

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  7. Write down the dimensional formula of force of friction

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  8. Write down the mathematical expression for coefficient of static frict...

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  9. Write down the mathematical expression for coefficient of kinetic fric...

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  10. Write down the mathematical expression for coefficient of static frict...

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  11. What is the slope of the graph attained by plotting of dynamic frictio...

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  12. What is static friction ?

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  13. What is kinetic friction ?

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  14. Discuss the statement “friction is a necessary evil”.

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  15. Why surface of tyres are made rough.

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  16. What is maximum value of coefficient static friction ?

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  17. What is nature of surface if coefficient friction is zero.

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  18. Is it possible to have musgt1 in nature ?

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  19. Why work done by force of friction is always zero ?

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  20. Why the coefficient of friction between two surfaces in contact varies...

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