Modeling the mechanics (almost literally) of an interesting problem as an OOP design exercise.
The rationale behind the design is based on a question statement originally published in 2016 on the largest entrance exam in Brazil, known as ENEM.
The statement of the question, originally in portuguese, is loosely translated to english on the text below:
The devise and coupling between gears revolutionazed the science at the time and made possible the invention of several technologies, like the clock. When building a small chronometer, a watchmaker uses the gear system shown. According to the figure, a motor is connected to the shaft making the arrow spin. The motor frequency is 18 RPM, and the number of cogs of the gears is shown on the chart.