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Simpler explanation
Posted by Tom (more from Tom) on Tue, 18 Sep 2001 22:27:05
In Reply to: Re: Don't do that, Steve Smith, Tue, 18 Sep 2001 18:44:36
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There are two things going on with the seat belt in an accident:
1) It's being pulled out of the retractor (it doesn't lock instantaneously so some slack is let out)
2) The belt stretches (kinetic energy =mass x velocity-squared)
To counteract these problems Saab(and pretty much every other European make) does two things:
1)Tension on the belt to limit slack before the accident (1 inch can make a difference when your head is headed toward the windshield)
2) Pre-tensioners. This device pulls the seatbelt (and the person wearing it) back into the retractor. Which is a great idea unless something stops the pulling (i.e. a clip!)
posted by 24.4.2...
Posts in this Thread:
- Seat Belts, Steve Smith, Mon, 17 Sep 2001 19:17:56
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