Questions
A block rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block (in kg) is : (take g = 10 m/s2)
detailed solution
Correct option is D
As tan-1(0.8) > 30°,so block remains at rest so ,f = mgsin30°= m = 2kgTalk to our academic expert!
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