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A block of mass m lying on a rough horiz...

A block of mass `m` lying on a rough horizontal surface of friction coefficient `mu` is pulled by a force `F` as shown , the limiting friction between the block and surface will be

A

`mumg`

B

`mu[mg+((F)/(2))]`

C

`mu[mg-((F)/(2))]`

D

`mu[mg-((sqrt(3)F)/(2))]`

Text Solution

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The correct Answer is:
C
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ERRORLESS -FRICTION-MCQ S
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  4. A 40kg slab rests on a frictionless floor as shown in the figure. A 10...

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  8. Assertion: On a rainy day, it is difficult to drive a car or bus at h...

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  9. Assertion : When a bicycle is in motion, the force of friction exert...

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  10. Assertion: Pulling a lawn roller is easier than pushing it. Reason: ...

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  11. Assertion : Angle of repose is equal to angle of limiting friction. ...

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  12. Assertion: Two bodies of masses M and m(M gt m) are allowed to fall fr...

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  13. Assertion: Friction is a self-adjusting force. Reason: Friction does...

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  14. Assertion : The value of dynamic friction is less than the limiting fr...

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  15. Assertion: The acceleration of a body down a rough inclined plane is g...

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  16. A force of 19.6 N when applied parallel to the surface just moves a bo...

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  17. If the normal force is doubled, the coefficient of friction is

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  18. A body of weight 50 N placed on a horizontal surface is just moved by ...

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  19. Block A weighing 100 kg rests on a block B and is tied with a horizont...

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  20. A rough vertical board has an acceleration a so that a 2 kg block pres...

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