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A box of mass 8 kg placed on a rough in...

A box of mass `8 kg ` placed on a rough inclined plane of inclination `theta` its downward motion can be prevented by applying an upward pull `F` and it can be made to slide upward appliying a force `2F` .The coefficient of friction between the box and the inclined plane is

A

`1/3 tan theta`

B

`3 tan theta`

C

`1/2 tan theta `

D

`2 tan theta`

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The correct Answer is:
A
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AAKASH SERIES-APPENDICES (REVISION EXERCISE)-LAW OF MOTION
  1. A body is released from the top of an inclined plane of inclination (t...

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  2. A body is sliding down an inclined plane having coefficient of frictio...

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  3. A box of mass 8 kg placed on a rough inclined plane of inclination th...

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  4. A box of mass 4 Kg is placed on a rough inclined plane of inclination ...

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  5. A body is pushed up on a rough inclined plane making an angle 30^@ to ...

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  6. The upper half of an inclined plane with an angle of inclination theta...

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  7. A body is moving up an inclined plane of angle theta with an initial k...

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  8. A block of mass M is pulled along a horizontal surface by applying a f...

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  9. A body is moving down along inclined plane of angle of inclination q. ...

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  10. A block of mass m is placed on a surface with a vertical cross section...

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  11. The force required to move a body up a rough inclined plane is double ...

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  12. A rocket is fired vertically from the earth with an acceleration of 2g...

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  13. A particle describes a horizontal circle on the smooth surface of an i...

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  14. A hemispherical bowl of radius R si set rotating about its axis of sym...

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  15. Length of a simple pendulum is 2m and mass of its bob is 0.2 kg. If th...

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  16. A particle of mass m is suspended from a ceiling through a string of l...

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  17. A chain of 100 links is 1m long and has a mass of 2kg. With the ends f...

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  18. Three point masses each of mass'm' are joined together using a string ...

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  19. One end of a massless spring of spring constant 100 N/m and natural le...

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  20. There is a small hole in a table. A string of length lm passes through...

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