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A block of mass 10 kg is released on rou...

A block of mass 10 kg is released on rough incline plane. Block start descending with acceleration `2m//s^(2)`. Kinetic friction force acting on block is (take `g=10m//s^(2)`)

A

10 N

B

30 N

C

50 N

D

`50sqrt(3)` N

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The correct Answer is:
B
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AAKASH INSTITUTE-LAWS OF MOTION-EXERCISE
  1. Block of mass 10 kg is moving on inclined plane with constant velocity...

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  2. The ratio of acceleration of blocks A placed on smooth incline with bl...

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  3. A block of mass 10 kg is released on rough incline plane. Block start ...

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  4. Blocks shown in figure moves with constant velocity 20 m/s towards rig...

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  5. In the previous problem. The friction force applied by ground on block...

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  6. A block of mass 10 kg is kept on a fixed rough (mu=0.8) inclined plan...

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  7. A block of mass 5 kg is at rest on a rough inclined surface. If angle ...

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  8. Maximum value of frictional force is called

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  9. Static friction between two surfaces

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  10. Coefficient of kinetic friction and coefficient of static friction bet...

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  11. The limiting value of static friction between two contact surfaces is

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  12. A block of mass m slides down an inclined plane which makes an angle t...

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  13. A block of mass 10 kg, moving with acceleration 2m//s^(2) on horizonta...

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  14. If angle of repose is phi, the coefficient of static friction between ...

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  15. Which of the following is a self adjusting force ?

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  16. Two blocks of masses 2 kg and 4 kg are hanging with the help of massle...

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  17. A man of mass m is standing in an elevator moving downward with an acc...

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  18. A vehicle is moving on a road with an acceleration a=20 m//s^(2) as sh...

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  19. In the given arrangement all surfaces are smooth. What acceleration sh...

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  20. A block of mass m kg is kept on a weighing machine in an elevator. If ...

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