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Old     (Cablephysicsknower)      Join Date: May 2017       05-16-2017, 3:17 AM Reply   
How are cable ski designed to minimize the size of forces on the body when starting?
Old    John Anderson (fly135)      Join Date: Jun 2004       05-16-2017, 8:42 AM Reply   
What is a "cable ski". Got any pictures?
Old    Nacho (denverd1)      Join Date: May 2004       05-16-2017, 12:38 PM Reply   
they're not
Old    Kevin Zoodsma (zoodsmak)      Join Date: Feb 2009       05-16-2017, 2:25 PM Reply   
In a very basic sense, imagine your standing on a dock at a lake and a boat drives past you from right to left exactly 70 feet off shore from the dock at 18 mph. They tossed you a line which just reaches you. You would essentially be 70-80 feet out to the side of the boat and get pulled outward on a pendulum accelerating from 0-18 mph.
Old    John Anderson (fly135)      Join Date: Jun 2004       05-17-2017, 8:07 AM Reply   
^In Kevin's scenario you also have to imagine the rope attached to the boat with a spring or big rubber band. The cable is very elastic or springy when you are pulling against it from the side. So when the cable pulls you up from the dock the cable gives a lot and that is what makes the startup very easy. If the cable pulled you up with the rope aligned with the cable, it would just yank the rope out of your hands.
Old    C.I.E. J-Rod (jarrod)      Join Date: May 2003       05-17-2017, 9:18 AM Reply   
Quote:
Originally Posted by fly135 View Post
^In Kevin's scenario you also have to imagine the rope attached to the boat with a spring or big rubber band. The cable is very elastic or springy when you are pulling against it from the side. So when the cable pulls you up from the dock the cable gives a lot and that is what makes the startup very easy. If the cable pulled you up with the rope aligned with the cable, it would just yank the rope out of your hands.
True. I never thought about it that way.

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