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Coefficient of friction depends on...

Coefficient of friction depends on

A

nature of two surfaces in contact

B

motion whether sliding or rolling

C

size of the surfaces

D

both (a) and (b)

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MBD-MODEL PAPER 2-EXERCISE
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  2. Why two holes are made to empty an oil tin?

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  3. Coefficient of friction depends on

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  4. Sand is thrown on trakcs covered with snow to

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  5. We slip easily on a rainy day because coefficient of friction

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  6. Lubricant is used in machine to

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  7. Angle of friciton (theta) and angle of repose (a) are related as

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  8. Two water droplets merge with each other to form large droplet. In thi...

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  9. Surface tension depends on

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  10. When there are no external forces ,the shape of a liquid drop is deter...

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  11. The surface of the water in contact with the glass wall is

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  12. If common salt is dissolved in water, then the surface tension of salt...

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  13. Define and explain dimensional formula and dimensional equation.

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  14. What do you mean by positive and negative acceleration?

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  15. The horizontal range of a projectile fired at an angle of 15^@ is 50 m...

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  16. A heavier and lighter body have the same momentum. Show that lighter b...

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  17. Explain why:- it is easier to pull a lawn mower than to push it.

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  18. An electron and a proton have equal momentum. Which has more kinetic e...

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  19. Show that for an isolated system, centre of mass moves with a uniform ...

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  20. Mass of a body is 20 kg at the surface of earth. AT what depth does it...

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