Questions
A block of mass M rests on a rough horizontal surface as shown. Coefficient of friction between the block and the surface is . A force F = Mg acting at angle with the vertical side of the block pulls it. In which of the following cases, the block can be pulled along the surface?
detailed solution
Correct option is D
N=Mg-Fcosθ=Mg-Mgcosθ=2Mgsin2θ2Further, block can be pulled, if F sinθ ≥ μN⇒ 2Mgsinθ2·cosθ2≥2μMgsin2θ2⇒ cotθ2≥μTalk to our academic expert!
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An ice cube is kept on an inclined plane of angle 30°. The coefficient of kinetic friction between the block and incline plane is the . What is the acceleration of the block?
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