Answer to Question #333596 in Mechanics | Relativity for jmae

Question

A coin lying on a meterstick starts to slide down when one end of the stick is raised

36.4cm above the horizontal. Find

a) The limiting angle for friction

b) The coefficient of starting friction

Answer 1

a)

$\theta=\arctan\frac lm=20°,$

b)

$\mu=\frac lm=0.364.$