Civil Engineering - UPSC Civil Service Exam Questions - Discussion

35. 

A 12 kg mass rests on a surface for which the coefficient of friction is μ= 0.15. What is the smallest force that can give the mass acceleration of 3 m/s2 ? (Take g = 10 m/s2).

[A]. 120 N
[B]. 100 N
[C]. 65 N
[D]. 54 N

Answer: Option B

Explanation:

No answer description available for this question.

Pops said: (Oct 26, 2017)  
Please, anyone explain this.

Basavaraj said: (Jul 24, 2018)  
F=0.15 * 3 * 12 = 5.4.
5.4*10=54.
Ans will be option D.

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