|
|
|
|
|||||
|
||||||
From: Robin (no email)
Date: Mon Apr 23 2007 - 10:24:39 EDT
CORRECTION !!!!!!
Yesterday I posted:
"...If a 40,000 lb boat gets moving/swinging at 1 knot and is brought to a
stop over three seconds, the force is F = MA = M (V/T) =40,000 (1/3) or 13,334
lbs!!!
The correct answer is 703 lbs!!.
I neglected to convert mass to weight and nautical miles per hour to feet per
second...The correct calculation is
F = MA = (W/g) (V/T) = (40,000lbs (1/32ft/sec/sec) )((1NM/Hr) (6076 ft/nm)
(1Hr/3600sec) / 3 seconds ) and is is 703 lbs.
And a good thing,too!! I was worried on my next swing at anchor,with the old
load number, I'd probably break loose!
I have a bevy of excuses or the error : (a) senility, (b) daughter was getting
ready for a Dave Matthews Band charity concert in NYC and crying hysterically
between fits of dancing, (c) Yorkie was bugging me to go for a walk, (a
variation of the ever popular "My dog ate my homework"),(d) wife was bugging
me to uncover the ppol,(e) senility..or did I mention that already??
Rob Brueckner
Hatteras YF
_______________________________________________
http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering
To unsubscribe send email to
with the word
UNSUBSCRIBE and nothing else in the subject or body of the message.
Trawlers & Trawlering and T&T are trademarks of Water World
Productions. Unauthorized use is prohibited.
|