Figure 1 shows a simplified representation of a gearbox inside a wind turbine generator.
To increase the rotational speed fed into the electrical generator, a large main turbine gear is meshed directly with a smaller generator pinion gear.
The main turbine gear has 112 teeth.
The generator pinion gear has 14 teeth.
During a period of steady wind, the main turbine gear rotates at a rate of 2.5 revolutions per second.
Calculate the number of revolutions per second at which the generator pinion gear rotates.