Re: [Phys-l] question about Bernoulli

["Anthony Lapinski" <Anthony_Lapinski@pds.org>]

Good demos! What about planes flying upside down? Shape of the wing? How
is this explained using Bernoulli's principle and Newton's laws?


Forum for Physics Educators <phys-l@carnot.physics.buffalo.edu> writes:
> How about these examples:
> 	Blowing across the top of a strip of paper held against your lower lip.
> 	Blowing between two balloons that are floating (or suspended) 
> side-by-side,
> 		close but not touching.
> 	Fabric top of a convertible billowing upwards.
> 	Plastic sheet covering side of double-wide being hauled on 
> highway billowing outwards.
> 	Two inch square of cardstock with straight-pin thru center,
> 		pin dropped thru hole in spool, blow thru spool to 
> hold card in place
> 		as you turn the spool over to be blowing downward.
>
> 	Or perhaps even air flowing faster over the top of an airfoil?????
>
> 	Spinning balls curve due to the Magnus Effect.
>
> At 11:58 AM -0700 11/23/10, William Robertson wrote:
> > I thought my opening statement was relatively clear, but I suppose one 
> > could take it completely literally in order to make someone else look 
> > stupid. What I meant was that there are many phenomena attributed to 
> > the Bernoulli effect, but it appears that the Bernoulli effect is not 
> > accurately ascribed to them. Knowing where the Bernoulli effect is and 
> > is not properly applied is key to one's (mine, in this particular 
> > case) understanding of the effect. It is also key to physics education 
> > in general. This is the Forum for Physics Educators, is it not?
> >
> > Bill
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