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Lena [83]
4 years ago
7

Suppose that you are standing on a train accelerating at 0.20g. What minimum coefficient of static friction must exist between y

our feet and the floor if you are not to slide.
Mathematics
1 answer:
umka21 [38]4 years ago
4 0

Friction force and train accelerating force are opposite in direction and equal in magnitude. Therefore m x a = u x m x g

As the mass is same, hence both are cancel out and remaining equation is

a = u x g

It’s given that a = 0.20g, so

0.20g = u x g

Cancel “g” on both sides;

0.20 = u

<span>Thus the coefficient of static friction = u = 0.20</span>
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