A smartphone can also be used as a swinging mass to
record the oscillation of a spring pendulum. A measurement
example that was recorded with an iPhone with a mass m =
0.152 kg is shown in Fig. 1. It results in an almost perfect sinusoidal
process, which offers similar learning opportunities as
the results of the string pendulum:
a) Why do the accelerations vary around g and at what points
of the swing are the maxima and minima located?
b) What is the duration of a period of an oscillation and how
high is the spring constant of the spring used?
c) How strongly is the oscillation dampened?