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welcome back



brian whatcott wrote:

I just scrambled back on the list ( Oh, the feeling of rejection...)

Missing you, Brian, I was contemplating a private message. But here
you are, with an explanation. I was also "rejected" (after the list was
transferred). I waited several days, then wrote to Dick Smith. He
resubscribed me.

I wander how many people were lost in the process of transferring.
Welcome back.



A student asked me why bumps feel less bumpy when
the car is traveling at a higher speed.


From a modeling perspective, if I consider the car mass, suspension, tire
system as a low pass filter ( it indeed must pass long sustained road
profiiles onto the body, else the suspension bottoms) then a higher
frequency impulse is further out of the pass band and is more highly
attenuated.

That is not to say the suspension will thank you - it is more highly
stressed - but at least the sprung body emits a silent sigh of relief.

Personificatorialy yours,

brian whatcott <inet@intellisys.net>
Altus OK