Questions
A box of mass 9kg is placed on a rough inclined plane of inclination . Its downward motion can be prevented by applying an upward pull of 20N and it can be made to slide upwards by applying a force 40N. The coefficient of friction between the box and the inclined plane is
detailed solution
Correct option is A
Force required to prevent slidingmg(sinθ−μcosθ)=20N→(1)Force required to move up mg(sinθ+μcosθ)=40N→(2)Solving (1) & (2) μ=13tanθSimilar Questions
In the figure shown, if coefficient of friction is , then m2 will start moving upwards, if
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