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A block of mass 5 kg is kept on a rough horizontalsurface (μ = 0.5). The block can be pulledhorizontally by an unknown force. The contactforce between the surface and block can be : (Forceis acting horizontally)(A) 50 N (B) 25 N(C) 75 N (D) 52 N
normal reaction = mg = 5*10 = 50N
option A) should be correct..
as the mass is to be pulled upward so the minimum force required is equal to the weight of body w=mg => w=F F=5*9.8=49N OR F=5*10=50N HENCE OPTION (A) IS CORRECT
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