An extremely large flywheel in a generator is rotating at 1833 revolutions per minute at full power. When the
power is discontinued, the speed of the wheel decreases exponentially (following the law of uninhibited
growth and decay). After 8 minutes, the speed of the wheel is at 1155 revolutions per minute. Suppose it is
safe for both the generator and personnel to manually stop the flywheel once the rpm's drop to 13 revolutions
per minute. How long after the power was discontinued is it safe to manually stop the flywheel? Give at least
3 decimal places.
Answer: It is safe after
minutes.