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Why does friction between two surfaces r...

Why does friction between two surfaces result in the generation of heat?

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When two irregular surfaces are rubbed against each other, they oppose relative motion and the mechanical energy applied gets converted into the heat energy. Hence, friction between them results in production of heat energy.
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PEARSON IIT JEE FOUNDATION-FRICTION-Classroom Corner (Short Answer Type Questions)
  1. Which forces makes a rolling ball stop on its own ?

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  2. What happends when we accidentally step on a peel of banana?

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  3. Does the friction depend on the smoothness of the surfaces?

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  4. Discuss why rolling friction is always less than sliding friction.

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  5. How does friction get affected by the nature of surface?

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  6. Give reasons for each of the following It is less tiring to move in ...

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  7. Give reasons for each of the following Weightlifters apply some chal...

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  8. Give reasons for each of the following It is harder to hold an oily ...

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  9. Discuss why it is easier to push an already sliding table than to push...

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  10. Our hands heat up when we rub them together for a while. Explain why?

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  11. The frictional force and externally applied force on a stationary obje...

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  12. If a box placed on a floor is pushed, do you think frictional force ex...

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  13. Why does friction between two surfaces result in the generation of hea...

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  14. Arun and Asheesh, are pushing a box kept on the ground, from opposite ...

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  15. Explain what type of friction is air resistance

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  16. Dicuss why is rolling friction the weakest.

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  17. How does the different type of surface affect friction?

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  18. Explain why objects moving in fluids must have special shapes.

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  19. Why do we shape aeroplanes like that of bird?

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  20. Write advantages and disadvantages of friction.

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