A wooden box lying at rest on an inclined surface of a wet wood is held at static equilibrium by a constant force 
applied perpendicular to the incline. If the mass of the box is 
, the angle of inclination is 
and the coefficient of static friction between the box and the inclined plane is 0.2 , the minimum magnitude of 
is (Use 
)
A
, as 
is less than angle of repose B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Making the free body diagram, according to question,
Here, mass, 
Accelerating due to gravity, 
Coefficient of static friction, 
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