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Sand is thrown on trakcs covered with sn...

Sand is thrown on trakcs covered with snow to

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JBD PUBLICATION-LAWS OF MOTION-EXAMPLE
  1. Why is it difficult to walk on sand?

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  2. Automobile tyres have generally irregular projections over their surfa...

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  3. Sand is thrown on trakcs covered with snow to

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  4. How can we save petrol by properly inflating the tyres of vehicles ?Ex...

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  5. Why are tyres made circular?

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  6. Is a large brake on a bicycle wheel more effective than small one ? Ex...

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  7. Arrange coefficient of limitin friction (mu1) ,coefficient of kinetic ...

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  8. It is difficult to start motion than to maintain it .Explain.

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  9. If angle of friction is 30^@,calculate the coefficient of friction.

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  10. A force of 50 kg is requird to pull a roller weighing 500 kg over ice....

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  11. A force of 3 kg weight is just sufficient to pull a block of 4 kg over...

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  12. A cubical block rests on an inclined plane with four edges horizontal....

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  13. An automobile is moving on a horizontal road with a speed of v.If teh...

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  14. A suitcase us gently dropped on a coneyor belt moving at 3 m//.If th ...

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  15. A motor car running at the rate of 7 m s^-1 can be stopped by its brak...

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  16. A 4 kg block A is placed onn 8 kg block B which rests on a smooth tabl...

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  17. A body weighing 20 kg just slides down a rough inclined plane that ris...

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  18. Why are mountain roads generally made winding upwards rather than goin...

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  19. Two billiard balls each of mass 0.05 kg moving in opposite directions ...

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  20. A nucleus is at rest in the laboratory frame of reference. Show that i...

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