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What is kinetic friction ?...

What is kinetic friction ?

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What is static friction ?

What is rolling friction ?Why is it smaller than the sliding friction ?

What is sliding friction ? Explain with the help of a graph how does it vary with a variation in applied force ?

Differentiate static and kinetic friction.

If mu_k is the coefficient of kinetic friction, mu_r the coefficient of rolling friction and mu_s the coefficient of static friction, then

Co-efficient of kinetic friction depends on the_____of the body.

If mu_s =coefficient of static or limiting friction and mu_k =coefficient of kinetic friction, then

Define co-efficient of static friction and co-efficient of kinetic friction. Which of the two is lesser ?

A block has been placed on an inclined plane. The slope angle of the plane is such that the block slides down the plane at a constant speed. The coefficient of kinetic friction is equal to

Write down the mathematical expression for coefficient of kinetic friction,

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  1. How does friction depend upon the normal reaction ? How it can be expe...

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

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  3. Why it is easier to roll a barrel than to push it along the road ?

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  4. A body of mass 5 kg is just in .motion along a horizontal plane. If th...

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  5. What is kinetic friction ?

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  6. Explain what is meant by co-efficient of friction and angle of frictio...

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  7. Friction is necessary evil, comment. Mention some methods of reducing ...

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  8. Define angle of friction.

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  9. What is rolling friction ?Why is it smaller than the sliding friction ...

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  10. Define co-efficient of static friction and co-efficient of kinetic fri...

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  11. What is sliding friction ? Explain with the help of a graph how does i...

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  12. Explain why a car travelling on a level road with coefficient of frict...

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  13. What are laws of static friction, Find out an expression for coefficie...

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  14. Explain how a body will move up in an incline with uniform velocity if...

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  15. What are different types of friction ? What are advantages and disadv...

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  16. What is friction ? How do you explain it on the basis of old theory an...

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  17. Friction is necessary evil, comment. Mention some methods of reducing ...

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  18. State laws of Iimiting friction. How would you verify them experimenta...

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  19. Define angle of friction and angle of repose and show that they are eq...

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  20. Calculate the force required to move a train of 2000 quintal up on an ...

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