Periodic Motion and Mechanical Waves (4A)
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QUESTION
Find the new period of a mass-spring system if the spring constant changes from
k
k
k
to $4k$ (same
m
m
m
).
QUESTION
Identify the phase difference in radians for two points separated by
λ
2
\frac{\lambda}{2}
2
λ
on a sinusoidal wave.
QUESTION
Find the wavelength if a wave has speed
v
=
12
m/s
v=12\ \text{m/s}
v
=
12
m/s
and frequency
f
=
3
Hz
f=3\ \text{Hz}
f
=
3
Hz
.
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ANSWER
λ
=
4
m
\lambda=4\ \text{m}
λ
=
4
m
. Wavelength calculates as speed divided by frequency, applying the fundamental wave relation
v
=
f
λ
v=f\lambda
v
=
f
λ
to given values.
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