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It is difficult to move a cycle along a ...

It is difficult to move a cycle along a road with its brakes on. Why?

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MBD-LAWS OF MOTION-EXAMPLE
  1. Can we get off a frictionless horizontal surface by jumping?

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  2. Explain how friction helps in walking.

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  3. It is difficult to move a cycle along a road with its brakes on. Why?

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

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  5. Name the two types of dynamic (kinetic) friction.

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  6. What is the cause of friction? In which case is it maximum?

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  7. How does coefficient of friction is altered when the weight of body is...

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  8. Friction is a self- adjusting force. Is it correct?

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  9. How friction is reduced in fast moving vehicle?

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

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  11. Why are rockets given conical shape?

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  12. What is the angular velocity of the hour hand of a clock?

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  13. Why skidding takes place on a rainy day along a curved path?

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  14. Give an example when a body moving with unifrom speed has acceleration...

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  15. Name the physical quantities which remains constant for a particle mov...

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  16. What provides the centripetal force to a caar taking turn on a level r...

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  17. Define centrifugal force.

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  18. What provides the centripetal force to a satellite revolving around th...

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  19. What is the relation between coefficient of friction and angle of repo...

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  20. What is the unit of coefficient of limiting friction?

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