> > Every road car can generate a resultant force on the occupants in
> > excess of 1G. Sitting at rest or at constant velocity, there's a 1G
> > force (down). If the car brakes on a level surface at 0.8G (most any
> > road car can achieve this), the resultant force is (sqrt (+ 1 (* 0.8
> > 0.8))) or 1.28 G. For a 1 G lateral acceleration on a level surface,
> > (sqrt 2) or 1.4 G is the resultant force on an occupant.
> True again (and it gets worse if you consider 3d force vectors) but
> I still reckon most people will not notice the difference. If you
> want it totally accurate I guess you need a very fast acting
> centrifuge :-)
> BTW. according to my sums, 1G down plus 0.8G back gives 1.34G at an
> angle of 51 deg from the horizontal..... ....just trying to get my
> own back for the Velocity comment :-)
Don't know. I got roughly 51.3 degrees at 1.28 G. (The 51.3 is a
little sketchy as I didn't use a calc with cos-1 implemented, so I did
a quick Newton's approximation.)
But, the magnitude of the resultant vector will clearly be (from
Pythagorean theorem) (sqrt (+ (* 1 1) (* 0.8 0.8))), which is 1.28...
Sorry,
---Jim