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Questions  

A body is sliding down an inclined plane having coefficient of friction 1/3. If the normal reaction is three times that of the resultant downward force along the inclined plane, the angle between the inclined plane and the horizontal is

a
tan−1⁡12
b
tan−1⁡(2)
c
tan−1⁡23
d
tan−1⁡32

detailed solution

Correct option is C

F=mgsin⁡θ−μkcos⁡θ;N=mgcos⁡θ

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