Vertical Testing: 420lbs vs 350lbs Dropped 5 Feet

In summary, the conversation discusses the difficulty of calculating the force exerted by a dropped weight, as it is affected by various factors such as the elasticity of the harness and supporting ropes. Without more information, it is difficult to determine a precise figure.
  • #1
normanwood
2
0
I am going to test a full body harness. I need to know how far a 420 pound weight needs to drop to exert the same force as a 350 pound weight dropped 5 feet.

Thank You

Norm Wood
 
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  • #2
Welcome to PF

You can't do that kind of calculation without much more information. The force arises from the deceleration, so what is just as important as height is the things that affect the deceleration, like the elasticity of the harness, supporting ropes, and deformation of the human body. Since some of these are pretty difficult to figure out mathematically, I suspect they are done experimentally with accelerometers in manequens or cadavers.
 
  • #3
If both manequens used the exact same harness and the same steel cable was used to stop the descent. Can you come up with a ball park fiqure.
 

FAQ: Vertical Testing: 420lbs vs 350lbs Dropped 5 Feet

What is vertical testing?

Vertical testing is a type of experiment that involves dropping objects from a specific height and measuring their impact or performance. It is often used to assess the durability and strength of various materials or products.

What is the difference between 420lbs and 350lbs in vertical testing?

The difference between 420lbs and 350lbs in vertical testing refers to the weight of the objects being dropped. In this case, the objects weighed 420lbs and 350lbs respectively and were dropped from the same height of 5 feet to compare their performance.

Why is 5 feet chosen as the height for vertical testing?

5 feet is often chosen as the height for vertical testing because it is a practical height that can simulate real-life situations. It is also a manageable height for researchers to conduct the experiment, and it allows for accurate measurements of the impact or performance of the objects being tested.

How is the impact or performance measured in vertical testing?

The impact or performance in vertical testing is typically measured by recording the amount of damage or deformation on the objects after being dropped from a specific height. Other factors such as bounce height, velocity, and acceleration may also be measured depending on the objectives of the experiment.

What are the implications of the results from vertical testing?

The implications of the results from vertical testing can vary depending on the purpose of the experiment. If the objects being tested are meant for structural or safety purposes, the results can help determine their strength and durability. If the objects are consumer products, the results can inform manufacturers about potential improvements or safety concerns.

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