Grade 12Mechanics

A block of mass 5 kg is kept on a rough horizontal
surface (μ = 0.5). The block can be pulled
horizontally by an unknown force. The contact
force between the surface and block can be : (Force
is acting horizontally)
(A) 50 N (B) 25 N
(C) 75 N (D) 52 N

aniket anil mandavkar

15 Years agoGrade 12

3 Answers

vikas askiitian expert

15 Years ago

normal reaction = mg = 5*10 = 50N

option A) should be correct..

ramendra bahadur singh

15 Years ago

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

sourabh singh

15 Years ago

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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

aniket anil mandavkar

3 Answers

vikas askiitian expert

ramendra bahadur singh

sourabh singh

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A block of mass 5 kg is kept on a rough horizontal
surface (μ = 0.5). The block can be pulled
horizontally by an unknown force. The contact
force between the surface and block can be : (Force
is acting horizontally)
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