Frictional Force A box sitting on a flat surface has a coefficient of static friction of μ s = 0.3. If one end of the surface is raised, static friction prevents the box from sliding until the force of static friction is overcome. The critical angle at which the box begins to slide, θ c , can be found from the equation tan θ c = μ s . What is the critical angle for the box? If the box is 5 ft from the pivot point, at what height will the box begin to slide? See the figure.
Frictional Force A box sitting on a flat surface has a coefficient of static friction of μ s = 0.3. If one end of the surface is raised, static friction prevents the box from sliding until the force of static friction is overcome. The critical angle at which the box begins to slide, θ c , can be found from the equation tan θ c = μ s . What is the critical angle for the box? If the box is 5 ft from the pivot point, at what height will the box begin to slide? See the figure.
Frictional Force A box sitting on a flat surface has a coefficient of static friction of
μ
s
=
0.3.
If one end of the surface is raised, static friction prevents the box from sliding until the force of static friction is overcome. The critical angle at which the box begins to slide,
θ
c
,
can be found from the equation
tan
θ
c
=
μ
s
.
What is the critical angle for the box?
If the box is
5
ft
from the pivot point, at what height will the box begin to slide? See the figure.
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