HELP Physics case study- Bungee jumping

[someone1235]

1. Properties of the ideal bungee rope tough? elastic? brittle? and how this could affect the physics of a bungee jump



2. elastic limit



3. Go on about this for 500 words for a full case study

 

[cupid.callin]

Hi someone1235

Are you asking us to do your homework
Sorry but Thats not allowed here

what do you think of first one?
What will happen to jumper if rope was brittle, tough and elastic?

think of the effect of force acting on jumper when jumper reaches lowest point (and rope is unstretched in case of elastic rope)

 

[someone1235]

Hi someone1235

Are you asking us to do your homework
Sorry but Thats not allowed here

what do you think of first one?
What will happen to jumper if rope was brittle, tough and elastic?

think of the effect of force acting on jumper when jumper reaches lowest point (and rope is unstretched in case of elastic rope)

I'm not asking anyone to do my homework haha , well I'm just stuck for words at the moment because there is nothing I can say apart from "it is stretchy". HELP !

 

[cupid.callin]

imagine you being the jumper
(yes that would be fun)

Now when you reach the bottom ...
In first rope, it will just break and you will fall down under gravity

In second one, it will stop giving you a jerk *ouch*
here the force acting on you due to rope will give a large deceleration. (can you tell why?)
As the time for stopping will be short, it will have a very (very very) large Impulse
(Hope you know about it, but in case, its Force*time)

This Impulse (according to Newton's second eqn of motion) is change in linear momentum.
So change in momentum will be large and all you bones will be collected in your head

(I'm sure you don't want any of the above to happen)

Now for elastic rope, the force acting on you will increase slowly and you will have small deceleration and thus small impulse and thus small momentum change
(and you'll be safe)