Creating a Shock-Absorbing Design for an Egg Drop

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SUMMARY

The discussion focuses on creating a shock-absorbing design for an egg drop challenge, emphasizing the need for a design that weighs less than 300g and fits within a Sterillite Plastic box. Participants suggest using elastic bands to suspend the egg in a cage-like structure, which minimizes impulse by extending the time it takes for the egg to come to rest. Various ideas include using a roll of toilet paper as a cushioning device and filling the box with water to further dampen movement upon impact. The design must comply with specific guidelines prohibiting traditional cushioning methods like bubble wrap or t-shirts.

PREREQUISITES
  • Understanding of basic physics principles, particularly impulse and momentum.
  • Familiarity with materials science, especially properties of elastic bands and their energy absorption capabilities.
  • Knowledge of structural design concepts to create a frame that can support the egg.
  • Experience with prototyping and testing designs under controlled conditions.
NEXT STEPS
  • Research the mechanics of impulse and how to effectively extend the time of impact absorption.
  • Explore advanced materials that can provide shock absorption without adding significant weight.
  • Investigate designs that utilize suspension systems, such as rubber band networks, for impact protection.
  • Experiment with fluid dynamics by testing various liquids for damping effects in impact scenarios.
USEFUL FOR

Students participating in engineering challenges, educators teaching physics concepts, and hobbyists interested in mechanical design and prototyping for impact resistance.

Crazyhooligin
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I need ideas to build a design that will prevent an egg from cracking or breaking.

Guidelines:
Design has to have a mass of <300g.
Must fit into a Sterillite Plastic box
Cannot simply be wraped in something (i.e. a pillow, bubble wrap, t-shirts)
Cannot reduce velocity (wings, Parachutes)


The egg will be dropped from around 1.5 m. at first, then it will be dropped from 10 m, so it should be able to withstand multiple trials. Thanks for your ideas!
 
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Design something with elestic bands in mind, like a frame, that holds the egg in the middle in some form of cage which is suspended from an outer frame using elastic bands. The idea of this excersise is to minimise impulse, so start thinking ablong the lines of how you could extend the time it takes for the egg to come to rest.

Throwing an egg against a wall < time to rest < throwing egg against loose sheet.
 
No wings? That's tough!
 
I take it that you cannot encase the egg in Jello or some other material?? Got to be a mechanical system of some kind?
 
yeah those are the only guidelines. I saw an interesting design on another site where you take a roll of toilet paper, place the egg in the center, stuff crumpled paper in the two ends and then duct tape the whole thing. I'm going to try it but suggestions are always welcome.
 
How about if you suspend the egg in the Sterilite box using a network of rubber bands, then fill the box with water to futher damp the movement of the egg under impact. You'll have to duct-tape the lid down securely because water is incompressible and it will tend to pop the lid on impact.
 

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