A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline...
A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the crate begins to move downward. If the crate starts to slides down the plane when the incline angle is 18°, what is the coefficient of static friction between ramp and crate? (g = 9.8 m/s^2)
a) 0.40
b) 0.50
c) 0.32
d) 0.24
e) 2.80
Apparently the answer is c, but how?
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