Grabbing something at Terminal Velocity

In summary, in Hollywood people fall a couple stories and grab onto a pole or something and survive, which most of the time doesn't seem too far fetched. But what if you were falling at terminal velocity and grabbed onto a horizontal pole? Well, even if you do catch the pole between your chest and wrap your arms around it, the force will be fatal and cause more damage because all the force will be undistributed. There is no way to survive without the pole being flexible.
  • #1
akhmed966
12
0
I know in Hollywood people fall a couple stories and grab onto a pole or something and survive, which most of the time doesn't seem too far fetched. But what if you were falling at terminal velocity and grabbed onto a horizontal pole? (The pole being a cantilever, and not flexible or anything at all, like a real world scenario)

Suppose if you grabbed onto it with both arms, would the force just rip your arms off, or just dislocate your arms and actually survive it?

What if you caught it between your chest, and wrapped your arms around it, parallel to the bar. I assume the force would still be fatal, and cause more damage since all the force will be undistributed. Would it be like grabbing a sword or something and just rip right through you or would you actually survive it.

If neither of these ways are possible, is there a way to survive without the pole being flexible?
 
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  • #2
The only falls people survive at terminal velocity are into something that gives quite a bit. Dense bushes, deep snow, that sort of thing. Anything that stops any part of your body more or less instantly is sure to be fatal.
 
  • #3
akhmed966 said:
I know in Hollywood people fall a couple stories and grab onto a pole or something and survive, which most of the time doesn't seem too far fetched.

Actually, it does if you think about it. The force of an adult male weighing, say 180lbs falling 3 stories and grabbing a solid railing is certainly enough to dislocate his shoulder even if he could manage to hang on, which I think is likely impossible since hands aren't that strong.

The damage that the heroes sustain, and more or less casually walk away from, in movies is usually completely ridiculous.
 
  • #4
Wow, haha. Never thought about this topic before but is certainly very intriguing.

One of my assignments in high school physics class was to watch a movie and note all of the "physics is broken" moments. Haha.
 
  • #5


I must clarify that terminal velocity is the maximum speed an object can reach while falling through a fluid (such as air) due to the balance of gravitational force and air resistance. It is typically around 120 mph for a human body in free fall.

That being said, the scenario described in this content is highly unlikely and would not be possible in a real-world scenario. Grabbing onto a horizontal pole at terminal velocity would result in a fatal impact due to the immense forces involved.

Firstly, the force of air resistance at terminal velocity is already equivalent to the weight of the falling object, which means that grabbing onto a pole would not significantly slow down the person's descent. In addition, the impact of the person's body hitting the pole at such high speeds would be catastrophic and would most likely result in severe injuries or death.

Even if the person managed to wrap their arms around the pole parallel to the bar, the force would still be fatal. The human body is not designed to withstand such extreme forces, and even the strongest bones and muscles would not be able to withstand the impact at terminal velocity.

In terms of flexibility, the rigidity of the pole would not make a significant difference in this scenario. The force of impact would still be fatal regardless of whether the pole is flexible or not.

In conclusion, it is not possible to survive grabbing onto a pole at terminal velocity in a real-world scenario. Hollywood may portray such scenarios for dramatic effect, but in reality, the laws of physics would make it impossible for a human body to withstand the forces involved.
 

Related to Grabbing something at Terminal Velocity

1. What is terminal velocity?

Terminal velocity is the maximum velocity an object can reach while falling through a fluid, like air, under the force of gravity. It occurs when the drag force of the fluid on the object is equal to the force of gravity pulling the object down.

2. How is terminal velocity calculated?

The formula for calculating terminal velocity is vt = √(2mg/ρACd), where vt is the terminal velocity, m is the mass of the object, g is the acceleration due to gravity, ρ is the density of the fluid, A is the cross-sectional area of the object, and Cd is the drag coefficient.

3. Can an object reach terminal velocity in a vacuum?

No, an object cannot reach terminal velocity in a vacuum because there is no fluid present to create drag force. In a vacuum, the object will continue to accelerate until it reaches its maximum velocity.

4. How does air resistance affect terminal velocity?

Air resistance, or drag force, is what causes an object to reach terminal velocity. As the object falls, the drag force increases until it becomes equal to the force of gravity and the object stops accelerating. The amount of air resistance an object experiences depends on its shape, size, and speed.

5. What factors can affect an object's terminal velocity?

Several factors can affect an object's terminal velocity, including its mass, shape, size, and the density and viscosity of the fluid it is falling through. Additionally, any external forces acting on the object, such as wind or air currents, can also impact its terminal velocity.

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