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Why work done by force of friction is al...

Why work done by force of friction is always zero ?

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  1. What is nature of surface if coefficient friction is zero.

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  2. Is it possible to have musgt1 in nature ?

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  3. Why work done by force of friction is always zero ?

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  4. Why the coefficient of friction between two surfaces in contact varies...

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  5. Name one factor upon which force of friction depends.

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  6. How do you define force of friction ?

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  7. Very first moving vehicles are given streamline shape. Why ?

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  8. Is friction independent of actual area of contact ?

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  9. Is friction a self adjusting force ?

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  10. How coefficient of friction and angle of repose are related ?

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  11. If the coefficient of friction is √3 , the angle of friction:

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  12. The magnitude of limiting friction F is directlyto the magnitude of th...

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  13. The ratio between force of limiting friction to the normal reaction gi...

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  14. Coefficient of friction between two surfaces in contact is always less...

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  15. Friction is a evil.

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  16. Co-efficient of rolling friction isthan that of sliding friction.

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  17. Co-efficient of kinetic friction depends on theof the body.

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  18. Force offriction does not depend on the -area of contact.

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  19. Lubricants are used toforce of friction.

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  20. The co-efficient of static friction is equal to where theta is angle o...

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