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A block of mass `M` is being pulley along horizontal surface .The coefficient of friction the block and the surface is `mu` If another block of mass `M//2` is placed on the block and it is pulled is again pulled on the surface , the coefficient of friction the block and the surface will be

A

`mu`

B

`3mu//2`

C

`mu//2`

D

`2mu`

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A
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
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  2. Two bodies of different masses are dropped simultaneously from same he...

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  3. A block of mass M is being pulley along horizontal surface .The coeffi...

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  4. A cycle is fitted with small brakes and another is fitted with very bi...

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  5. (A) : When a bicycle is in motion, the force of friction exerted by th...

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  6. In the figure, masses m(1), m(2) and M are 20kg, 5kg, and 50kg respect...

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  7. Two masses m(1) and m(2) (m(1) gt m(2)) are falling from the same he...

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  8. Which of the following is correct

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  9. Explain why a high pressure tyre roll more easily than a low pressure ...

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  10. Matching block type LIST - I (a) Two rotating discs are brought...

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  11. The limiting friction between two bodies in contact is independent of

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  12. (A) : When external force acting on a body moving on a rough horizonta...

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  13. Lubrication reduces friction because

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  14. A cyclist pedals the cycle for some time and then stops peddling, then

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  15. The limiting friction between two surfaces depends

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  16. A block 'B' rests on 'A'. A rests on a horizontal surface 'C which is ...

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  17. To keep a particle moving with constant velocity on a frictionless hor...

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  18. Frictional force between two bodies

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  19. If man is walking, direction of friction is

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  20. On a frictionless horizontal surface , assumed to be the x-y plane ,...

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