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Block A of mass 6 kg and block X are att...

Block A of mass 6 kg and block X are attached to a rope which passes over a pulley. A force `P=50N` is applied horizontally to blcok. A, keeping it in contact with a rough vertical face. The coefficients of static and kinetic friction are `mu_(S)=0.40` and `mu_(K)=0.30`. The pulley is light and frictionless. In figure, the mass of block `X` is set so that block A is on the verge of slipping upward. The mass of block X is `alpha kg`. Fill the value of `alpha` in OMR sheet.

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