A 400-N crate rests on a ramp;the maximum angle just before it slips is 15.0° with the horizontal.What is the coefficient of static friction between crate and ramp surfaces?
A)3.7
B)0.47
C)2.1
D)0.27
E)0.40

Question

Quizplus · Accepted Answer

The coefficient of static friction ($\mu_s$) can be calculated using the formula $\mu_s = \tan(\theta)$, where $\theta$ is the angle of the incline. For $\theta = 15.0°$, $\mu_s = \tan(15.0°) \approx 0.27$.

A 400-N Crate Rests on a Ramp;the Maximum Angle Just