On 30 Jan, Peter Wemm wrote:
> Mark Huizer wrote:
>> > |
>> > | Doh! I mean 9.8 m/s/s, of course.
>> >
>> > That's acceleration not velocity :-)
>> >
>> > The terminal velocity of a PC case is probably a lot lower than the
>> > velocity of an outer edge of a 10000 RPM drive.
>> >
>> What am I doing wrong? Given a diameter of appr. 7cm, I'd come at appr
>> 0.7Mach. Does that mean that within a few years my machine will go
>> KABOOM when booting?
>
> I have a 15K rpm drive if you want to do a recalculation. I think that
> is 1.05Mach, depending on whether you rounded or not. ;-)
>
Hang on, there's a bug here somewhere:
7cm = .07m,
.07m x 3.14... = .22m (per rotation)
.22m *15000/60 = 55m/s or ~ 195km/h or 123 mph, not even close to a fast car.
We should expect breaking the sound barrier with >75krpm drives
(depending on your altitude and air pressure)
-Th
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