Question

A block of mass M rests on a rough horizontal surface. Coefficient of friction between the block and the surface is μ. A force F=Mg acting at angle θ with the vertical side of the block pulls it. In which of the following cases the block can be pulled along the surface:- (A)†anθ≥μ (B)†an(θ/2)≥μ (C)cotθ≥μ (D)cot(θ/2)≥μ

Answer 1