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From: msb@hosmsb.ATT.COM (Mike Balenger)
Newsgroups: rec.skydiving
Subject: Re: bungee jump from plane
Message-ID: <1991Feb13.191314.13568@cbnewsh.att.com>
Date: 13 Feb 91 19:13:14 GMT
References: <1991Feb12.024253.21786@murdoch.acc.Virginia.EDU>
	<40BXw1w163w@ireta.cynic.wimsey.bc.ca>
	<1991Feb13.172511.6896@murdoch.acc.Virginia.EDU>
Sender: msb@cbnewsh.att.com (michael.s.balenger)
Reply-To: msb@hos1cad.ATT.COM (Mike Balenger)
Organization: AT&T Bell Laboratories -- Holmdel, NJ
Lines: 24
In-Reply-To: ds4a@dalton.acc.Virginia.EDU's message of 13 Feb 91 17:25:11 GMT


>>>>> On 13 Feb 91 17:25:11 GMT, ds4a@dalton.acc.Virginia.EDU (Dale Southard) said:

ds4a> 1) Can the jumper really bounce back up and hit the plane? (I
ds4a> think this violates some enery conversion law somewhere)

Finally, a good question!!!

Bungee jumpers never make it back to the jump altitude!!!  (I think
they make it back to about 70%, but I'd rather hear the real number
from a real jumper.)  Energy is lost in stretching the cord and
overcoming air drag.  My guess is that the air drag on a plane bungee
jumper would so dominate the equations that there'd be little or no
rebound.  Boo hiss!!!  I'd like lots of rebounds.



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