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Physics
Physics
Problem
A block just begins to slide down a rough incline when the angle of the plane with the horizontal is
θ
\theta
θ
. The coefficient of static friction
μ
s
\mu_s
μ
s
between the block and the plane is a)
cot
θ
\cot\theta
cot
θ
b)
tan
θ
\tan\theta
tan
θ
c)
sin
θ
\sin\theta
sin
θ
d)
tan
(
θ
2
)
\tan\!\left(\dfrac{\theta}{2}\right)
tan
(
2
θ
)
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