Elastic Bungee
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 CASE Lot 50 Elastic Bungee Shock Cords Cable 48 4 Ft  US $125.00
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 CASE Lot 60 Elastic Bungee Shock Cords Cable 24 2 Ft US $89.99
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 Bulk Lot 10 Elastic Bungee Shock Cords Cable 48 4 Ft US $29.99
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 Bungee Elastic Braided Cord 50 Feet US $6.75
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 BOXER TOOLS 66281 15 Flat Elastic HD Bungee Cord w 2 Steel Covered Hooks NEW US $5.60
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 6 Bungee Cords Many colors sizes Bungie Chord Elastic US $4.99
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 New 6 Piece Assorted Elastic Bungee Cords US $2.75
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 Shock Bungee Elastic Braided Cord 20 Feet Color Black US $2.50
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 24 ELASTIC TIE DOWN BUNGEE CORDS 6 PIECES TAIE460 24 US $2.09
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 3 8 Coated Wire Cone Hooks for Elastic Stretch Bungee Cord Pk2 US $1.95
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Why Bungee Jumping Has Spread To The Mainstream
So you have decided that you desire to try bungee jumping, but want to search the safety problems concerned with this extreme sport. I don't blame you; the safety of bungee jumping need to be the top of anyone's priority list if they are thinking it. Obviously, jumping of an object high in the air isn't anything you do everyday and there are lots of dangers which you need to contemplate ahead of you take component in this intriguing and exhilarating experience.
Bungee jumping corporations need incredibly strict regulations to be able to continue their business, so when you are searching for a business to do your jump with it's crucial to check that they comply with all regulations. In most companies all bungee clubs have to be governed with a safety organisation that regulates the standards in numerous environments. In Britain there is an organisation referred to as the Well being and Safety Executive (HSE) that list adventure exercising providers just like bungee jumping, which are regulated with high standards.
There is another organisation in Britain that may be entirely devoted on the safety of bungee activities everywhere across the country. This company is named BERSA, or the British Elastic Rope Sports Association. BERSA work closely with HSE on standards that must be upheld by those people that organise and conduct bungee jump activities. Clubs and members can voluntarily sign as much as these guidelines from BERSA, but there's no legal requirement to try and do so.
Commercial operators also need to examine all the standards of bungee equipment, before a leap the equipment is always checked three times or so. An error in this procedure could cost somebody there life so it is very important that this can be done. Each start has being recorded as bungee cord has a limited life expectancy and must be replaced.
If you decide to bungee start then be aware that your pounds will be measured and checked perhaps twice. Every detail has to become right so that the physics from the start are right. This all has to be correct prior to you do your start as as soon as you've left your platform there's no turning back. You'll find quite a few injuries that can be sustained through bungee jumping from bruising via to broken limbs, but of the right safety measures, skydiving, is often a liberating and excellent experience. It is just advisable to become fully aware with the safety problems that come with it.
The amount of heat generated in the bungee cord is substantial.?
A bored college student decides to try bungee jumping. He attaches an elastic bungee cord to his ankles and happily jumps off a tall bridge across a river. He ends up barely touching the water before the cord jerks him back up. What is the mass m of the student? The length of the relaxed cord is y(e); the distance from the bridge to the river surface is y(0) (where y(0) > y(e)), and the spring constant of the elastic cord is k.
Which objects are reasonable to include in the system in this problem? a,the bridge b,the student c,the bungee cord d,the air
e,the river f,the planet earth g,the moon h,the sun
Which assumptions are reasonable to make in this problem?
The student can be treated as a particle moving with constant speed. The student can be treated as a particle moving with constant acceleration. The student cannot be treated as a particle. The air resistance is substantial. The air resistance is negligible.The amount of heat generated in the bungee cord is subs
If you idealize the motion without any resistance and an idealized spring representing the bungee cord, then the potential energy lost in the drop of the student from the bridge to the river is
m*g*y(0)
The energy then stored in the bungee at the moment the velocity of the student is zero, is:
.5*k*(y(0)-y(e))^2
this includes the earth, the student, and the bungee cord, and the relative vertical distance from the bridge to the river.
The other factors such as the moon and the sun will have negligible effect on the student's motion.
Air resistance could be a factor depending on the distance from the bridge to the river. Since air resistance creates a drag force, there will be energy loss due to this force which will reduce the extension of the bungee cord resulting in a hand in the water versus a face plunk. F=d*v^2
The terminal velocity of a skydiver presenting maximal area to the fall is about 40 m/s, which requires more than 800 feet of free fall. Since the maximum velocity occurs in the early stages of deccelartion due to the force of the bungee, air resistance is unlikely to be a major factor. The highest bridge in the world is Royal Gorge, Colorado U.S.A. , which is 950 feet from road surface to the gorge floor. If the bored college student forgets to attach the cord, they will plunge into the ground at about 95 miles per hour.
Heating the bungee is unlikely to be a factor since the cord is relatively light and suseptible to melting. The amount of heat that would be measurable as a loss in potential energy would likely cause spontaneous combustion in the cord.
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John Roach - You are on an elastic bungee cord.flv
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