|The first phase of bungee jumping is facing the edge where
you are going to jump from. It is not very difficult but then comes
the most terrifying scene.You are standing in front of an abyss wondering
why on Earth you are doing this. Your instict of self-preservation
does not allow you to pass. Usually people need someone to countdown
or even push them in order to jump. 3,2,1
and the jump comes
- the adrenaline has reached its highest level. Many people scream
to release the tension. The professionals perform various stunts.Then
everything ends and only dizziness remains.
After the jump a stage called free fall takes place. The free fall
continues for a couple of seconds ( depending on the heigth) and then
the cord reaches its full free length. After that it stretches more
depending on its elongation and the weight of the jumper.The extra
length of the cord E when it stretches is calculated with the formula
where m is mass of the jumper , L is the length of the cord and k
is the stiffness of the cord.When a jumper with weigth m is about
to jump from a certain length- the overall cord length(L+E ),the stiffness
K is calculated with this formula:.
The stiffer the cord ,the less it stretches.
After the initial jump there are several the bounds of the cord. Then
comes the take-off.Either the jumper is pulled up back to the platform
or he is let down where he is put on a special air-bag platform or
taken manually. And then everything has ended except for the adrenaline
in your veins.