+1 vote
in Machine Kinematics by (38.0k points)
A body of mass 1 kg is kept on a rough surface is being pulled by a force of 2N, what will be the value of coefficient of friction if it just begins to move. Take g = 10m/s^2.

(a) 0.2

(b) 0.25

(c) 0

(d) 0.4

I had been asked this question in quiz.

This key question is from Limiting Friction topic in division Friction of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right option is (a) 0.2

To explain: The acting friction will be limiting having a value of 2N.

Since the body just begins to move, we have

f = μN = 2N

therefore

μx10 = 2N

μ = 0.2.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...