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A wooden box of mass 8kg slides down an ...

A wooden box of mass `8kg` slides down an inclined plane of inclination `30^(@)` to the horizontal with a constant acceleration of `0.4ms^(-2)` What is the force of friction between the box and inclined plane ? `(g = 10m//s^(2))` .

A

`12.2 N`

B

`24.4N`

C

`36.8N`

D

`48.8N`

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The correct Answer is:
C
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TARGET PUBLICATION-FRICTION IS SOLIDS AND LIQUIDS -MCQ (COMPETITIVE THINKING)
  1. A block B is pushed momentarily along a horizontal surface with an ini...

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  2. A block rests on a rough inclined plane making an angle of 30^@ with t...

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  3. A wooden box of mass 8kg slides down an inclined plane of inclination ...

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  4. A wooden box lying at rest on an inclined surface of a wet wood is hel...

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  5. What is the maximum value of the force F such that the block shown in ...

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  6. A system consists of three masses m(1),m(2) " and " m(3) connected by ...

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  7. Maximum value of static friction is .

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  8. Which of the following statements is incorrect ?

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  9. A body of mass M is kept n a rough horizontal surfasce (friction coeff...

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  10. Consider a frictionless ramp on which a smooth object is made to side ...

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  11. Block B lying on a table weighs w. The coefficient of static friction ...

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  12. A heavy uniform chain lies on a horizontal table-top. If the coefficie...

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  13. A block A with mass 100kg is resting on another block B of mass 200kg....

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  14. A block of mass 2kg is kept on the floor. The coefficient of static fr...

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  15. Given in figure are two blocks A and B of weight 20N and 100N, respect...

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  16. A block of mass m is lying on horizontal surface of coefficient of fri...

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  17. A marble block of mass 2 kg lying on ice when given a velocity of 6m//...

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  18. A block of mass m(2) is placed on a horizontal table and another block...

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  19. A block of mass m=5kg is resting on a rough horizontal surface for whi...

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  20. A body of mass 20 kg is moving on a rough horizxontal plane. A block o...

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