HELP Physics case study- Bungee jumping

In summary, in the case of a brittle, tough, and elastic rope, the physics of a bungee jump will be different. In the case of a brittle rope, the rope will break and the jumper will fall under gravity. In the case of a tough rope, the force acting on the jumper will increase slowly and the jumper will have a small deceleration. In the case of an elastic rope, the force acting on the jumper will increase slowly and the jumper will have a small impulse.
  • #1
someone1235
4
0
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
 
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  • #2
Hi someone1235 :smile:

Are you asking us to do your homework :rolleyes:
Sorry but Thats not allowed here :-p

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)
 
  • #3
cupid.callin said:
Hi someone1235 :smile:

Are you asking us to do your homework :rolleyes:
Sorry but Thats not allowed here :-p

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 !
 
  • #4
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 :eek:

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)
 
  • #5
Bungee jumping is a popular extreme sport that involves jumping off a tall structure while attached to a long elastic rope. This thrilling activity has attracted many adrenaline junkies and has become a common feature in adventure tourism. However, the safety and success of a bungee jump largely depend on the properties of the bungee rope used. In this case study, we will explore the physics behind bungee jumping and how the properties of the bungee rope can affect the experience.

1. Properties of the ideal bungee rope: When it comes to bungee jumping, the ideal rope should possess certain properties to ensure a safe and enjoyable experience. These properties include toughness, elasticity, and durability. The rope must be tough enough to withstand the forces exerted during the jump, yet elastic enough to stretch and absorb the energy of the fall. A brittle rope would not be suitable for bungee jumping as it could break under the stress of the jump, resulting in a dangerous situation.

The elasticity of the rope is crucial in determining the bungee jump's success. When a person jumps off a high structure, they experience a free fall until the rope reaches its maximum stretch, at which point it pulls the jumper back up. If the rope is not elastic enough, it will not stretch far enough to absorb the energy of the fall, resulting in a sudden and potentially dangerous stop. On the other hand, if the rope is too elastic, it will stretch too far, causing the jumper to bounce up and down multiple times, which can also be dangerous.

The durability of the rope is also essential in ensuring a safe bungee jump. The rope must be able to withstand repeated use and exposure to the elements without losing its elasticity or breaking. A rope that is not durable can snap during a jump, putting the jumper's life at risk.

2. Elastic limit: The elastic limit of a material is the maximum stress it can withstand while still returning to its original shape when the stress is removed. In the case of bungee jumping, the rope must have a high elastic limit to ensure the jumper's safety. If the rope is stretched beyond its elastic limit, it will not return to its original length, compromising its ability to absorb the energy of the fall. This can result in a sudden stop or even a rope break, which can be catastrophic.

The elastic limit of a bungee rope also plays a crucial role in determining the maximum height from which
 

FAQ: HELP Physics case study- Bungee jumping

1. How does gravity affect bungee jumping?

Gravity plays a crucial role in bungee jumping as it is the force that pulls the jumper towards the ground and causes the bungee cord to stretch. The acceleration due to gravity is what gives the jumper the sensation of falling before the bungee cord reaches its maximum length and pulls the jumper back up.

2. What is the ideal length for a bungee cord?

The ideal length for a bungee cord depends on several factors, including the weight of the jumper and the height of the jump. Generally, the length of the cord should be around 4-5 times the height of the jump. However, it is important to note that the length of the cord should be customized for each individual to ensure a safe and enjoyable experience.

3. How does elasticity play a role in bungee jumping?

Elasticity is a key factor in bungee jumping as it determines how much the bungee cord can stretch and how much force it can absorb. A highly elastic cord is important for a safe and comfortable jump, as it will prevent the jumper from hitting the ground or experiencing a sudden jerk when the cord reaches its maximum length.

4. Is there a risk of injury in bungee jumping?

Like any extreme sport, there is a risk of injury in bungee jumping. However, when proper safety precautions are taken, such as using high-quality equipment and following all safety protocols, the risk of injury is significantly reduced. It is important to choose a reputable bungee jumping company and to always listen to the instructions given by the trained professionals.

5. What are the main physics principles involved in bungee jumping?

Bungee jumping involves several physics principles, including gravity, elasticity, and energy conservation. The jumper's potential energy is converted into kinetic energy as they fall, and then back to potential energy as the bungee cord stretches and pulls the jumper back up. The bungee cord also demonstrates the principle of Hooke's law, which states that the force applied to an elastic object is directly proportional to the amount of stretch.

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