harmonic if the period (the time for one cycle) does not depend
on the amplitude (the maximum displacement from equilibrium). In
the following set, identify the oscillations that are simple
harmonic, the ones that are approximately simple harmonic, and the
ones that are not simple harmonic. Please comment on why/how you
make your identifications.
1. The pendulum in a grandfather clock
2. A boat in water pushed down and released
3. A child on a swing
4. A mass hanging...