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From: rubin@mtuxn.UUCP (M.RUBIN)
Newsgroups: net.physics
Subject: Re: Question... [On tilt-meters in off-road vehicles]
Message-ID: <627@mtuxn.UUCP>
Date: Thu, 22-Aug-85 15:51:35 EDT
Article-I.D.: mtuxn.627
Posted: Thu Aug 22 15:51:35 1985
Date-Received: Sat, 24-Aug-85 16:25:37 EDT
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If you are taking a corner at 25 degrees "tilt", you are probably going
rather fast on a paved road.  Large bumps are not to be expected, and if you
see any ahead you can slow down.  You will probably also skid before you
roll (see below).  On the other hand, bumps are fairly common on hillsides
and slowing down doesn't help much.

Psychologically, when taking a corner you can still *see* that you're
on flat ground regardless of what your inner ear (or tiltmeter) says.
The brain probably averages these readings somehow.

Jeeps *are* infamous for capsizing in turns on the highway, because of the
above illusion and because (unlike cars) they will roll before they will slip
sideways appreciably.  Wider modern 4WD's aren't as bad.