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

A box of mass 4 Kg is placed on a rough inclined plane of inclination `60^@`. Its downward motion can be prevented by applying an upward pull F. And it can be made to slide upwards by applying a force 3F. The coefficient of friction between the box and inclined plane is

A

`(2)/(sqrt3)`

B

`(sqrt3)/(2)`

C

`(1)/(sqrt2)`

D

`1/2`

Text Solution

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The correct Answer is:
B
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