In this case, when the motor is allowed to spin up to around 550 rpms, and the capacitor is fully charged, the motor will power its light longer than the capacitor when disconnected from the power source. This only works with this size capacitor and lower though. In this case the motor becomes a generator, and since the load is very light it can light it for a while. However I don't think in real life the motor would spin down and power the light this long.
