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Q6) A FOUR-stroke single cylinder engine produces 750 kW at 720 RPM with an energy fluctuation of 20% of the work done per cycle. A flywheel is to be fitted in order to stabilise the speed for power generation such that the frequency is 60 ± 0.2 Hz.

Calculate the diameter of a soild flywheel that is 350 mm thick. (16)

Note: Density of the flywheel material =7800 kg/m³.