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Unformatted text preview: rn to its original position and be stationary.
d. The mass will vibrate with a frequency slower than 2 Hz
e. None of the above. When the spring is stetched at equilibrium
F
mg
kx0
mg
x0 k When the spring is further stretched and released, it will oscillate.
F ma
kx
d 2x
kx
dt 2
x A sin( t m k
m 2f
1
2 f ) g
x0 1
2 10m / sec 2
.1m 10
Hz
2 13. In the limit that a sphere becomes very small, what happens to the ratio of the surface area of
the sphere to the volume of the sphere?
a. The ratio becomes very small.
b. The ratio stays the same.
c. The ratio becomes very large.
d. There is insufficient information to draw a conclusion.
e. None of the above. Vsphere
Asphere
Asphere
Vsphere
lim Rsphere 4
3
Rsphere
3
2
4 Rsphere
2
4 Rsphere
4
3
Rsphere
3 Asphere
0 Vsphere 3
Rsphere...
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 Fall '12
 Dr.Holley

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