This paper reports a computer model simulation created using Easy Java Simulation (EJS) for learners
to visualize how the steady-state amplitude of a driven oscillating system varies with the frequency
of the periodic driving force. The simulation shows ( N = 100) identical spring-mass systems being
subjected to (1) a periodic driving force of equal amplitude but different driving frequencies, and
(2) different amounts of damping. The simulation aims to create a visually intuitive way of
understanding how the series of amplitude versus driving frequency graphs are obtained by showing
how the displacement of the system changes over time as it transits from the transient to the steady
state. A suggested ‘how to use’ the model is added to help educators and students in their teaching
and learning, where we explain the theoretical steady-state equation time conditions when the model
begins to allow data recording of maximum amplitudes to closely match the theoretical equation, …