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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 1kg, the angle of inclination is 30^(@) and the coefficient of static friction between the box and the inclined plane is 0.2, the minimum magnitude of 7 is (Use g= 10m//s^2 ) |
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Answer» 0 N , as `30^(@)` is less than angle of repose |
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