A pendulum has a period of oscillation of 2 s at sea level, on
the surface of the Earth. What is its angular frequency of
oscillation?
(a) 3.14 rad/s
(b) 6.28 rad/s
(c) 0.5 rad/s
(d) 1.57 rad/s
If you take this pendulum to the top of a mountain, where the
force of gravity is a little weaker than at sea level, what will
happen to its period?
(a) It will be a little longer than 2
s
(b) It will be a little shorter than 2
s
(c) It will not change
What if you take it to the international space station, where
the force of gravity is about 0.9 times what it is on the surface
of the Earth? (Warning: trick question! Remember the ISS is in free
fall)
(a) The period will be about 2.1 s
(b) The period will be about 1.9 s
(c) The period will not change
(d) The pendulum will not oscillate at
all
Suppose you have a periodic (harmonic) wave of frequency 440 Hz.
If it is traveling at 340 m/s, what is its wavelength?
(a) 4.85 m
(b) 1.29 m
(c) 0.773 m
(d) 0.123 m
When you pluck a guitar string, what kind of wave pulse do you
have on the string: transverse, or longitudinal?
(a) Transverse
(b) Longitudinal
(c) Neither