Some racers use "aero wheels" to reduce drag. A wheel consists of:
- outer rim (a ring of mass 0.90 kg and radius 32 cm)
- solid disk (mass 0.54 kg and radius 29 cm)
Calculate the total moment of inertia I for this wheel.
Calculate the percentage of the total I which comes from the solid disk.
Races have an "acceleration phase" at the start, then a "constant high velocity" phase for the rest of the race.
During which phase do the "aero wheels" help the racers?