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Explain why objects moving in fluids mus...

Explain why objects moving in fluids must have special shapes.

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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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