A 0.8-gram package lying on a horizontal surface is attached to a horizontal string which passes over a smooth pulley. When a mass of 0.0006 KG is attached to the other end of the string, the package is on the point of moving. Find μ, the coefficient of friction
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Explanation:
Maximum speed is at mean position(equilibrium). F=kx
x=
k
F
W
F
+W
sp
=ΔKE
F(x)−
2
1
kx
2
=
2
1
mv
2
−0
F(
k
F
)−
2
1
k(
k
F
)
2
=
2
1
mv
2
⇒V
max
=
mk
F
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