Ken,
Coming from a Pilot's stand point. There is no way an aircraft could pull
700g's. 7G's yes. People black out at 4.5-5g's if they are not wearing a
Gsuit like the military pilots wear. Military pilots can pull up to 9g's but
they are wearing the Gsuit. Most commercial aircraft might have the
structural strength to with stand a 16G load Factor. At 700G's a person
weighing 150lbs would weigh 35,000lbs.
Are you sure it was not 7G's the aircraft was pulling??
Mike
> -----Original Message-----
> From: Ken Patel [SMTP:[log in to unmask]]
> Sent: Wednesday, October 10, 2001 6:29 PM
> To: [log in to unmask]
> Subject: Re: [TN] Question for the physics "gurus"
>
> All,
> If G force is the gravitation force acting on the object then why many
> times an object is
> being designed to take so may G forces. What I have heard that voice
> recorder of the plane
> that went down in Pennsylvania can take on 700G force! So, if the free
> fall is 1 G then why
> design 700 times safer. So, height above the ground does matter. May be I
> got to take a look
> at the physic's book unless someone explain in layman's term.
>
> re,
> Ken Patel
>
>
> Timothy Reeves wrote:
>
> > No Jason,
> > I am not a guru, but that's OK. They are not interconvertible. One is a
> > measure of force, the other acceleration (actually a dimensionless
> > multiplier of the standard gravitational acceleration, g, 9.8 m/s^2). If
> you
> > have an object in mind of a known mass, you could find the force exerted
> on
> > it given the acceleration ("G's") by F = m a.
> >
> > Example: 100 gram object subjected to 5 G's ---------> F = 0.1 kg * 5 *
> 9.8
> > m/s^2 = 4.9 Newtons or 0.5 kilogram force or 1.1 lb-force.
> >
> > Tim Reeves
> >
> > -----Original Message-----
> > From: Jason Gregory [mailto:[log in to unmask]]
> > Sent: Tuesday, October 09, 2001 9:01 AM
> > Subject: Question for the physics "gurus"
> >
> > How do you convert pound/kilogram to G-force? Is this convertable? Since
> > G-force is somewhat time derived and pound/kilogram is force derived?
> > Any help is appreciated.
> >
> > Jason Gregory
> > Software Specialist - NPI Group
> > SCI Systems/Plant 2
> > 13000 S. Memorial Pkwy.
> > Huntsville, AL. 35803
> > (256) 882-4107 x3728
> > [log in to unmask]
> >
> >
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