Construct an Egg-Safe Structure with Newspaper and Masking Tape

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SUMMARY

The discussion focuses on constructing a structure using 4 sheets of newspaper and 1 meter of masking tape to safely catch four eggs dropped from a height of 6 feet. Participants suggest various designs, including multiple baskets stacked to slow the eggs' descent and an accordion-like folding technique to absorb impact. The physics principle of impulse is emphasized, highlighting the need to minimize force on the eggs. Additionally, the idea of using a funnel-like device is proposed to guide the eggs safely into the structure.

PREREQUISITES
  • Understanding of basic physics concepts, particularly impulse and momentum.
  • Familiarity with structural design principles using lightweight materials.
  • Knowledge of effective impact absorption techniques.
  • Experience with hands-on engineering projects involving everyday materials.
NEXT STEPS
  • Research effective designs for impact-absorbing structures using paper and tape.
  • Explore the physics of impulse and momentum in real-world applications.
  • Investigate the use of funnel shapes in engineering for guiding objects.
  • Experiment with various folding techniques to enhance impact resistance in structures.
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Students, educators, and hobbyists interested in physics, engineering design, and hands-on projects that involve creating protective structures for fragile items.

Phox
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Alright. Um. We have 4 sheets of newspaper and 1 meter of masking tape. We have to design a structure to catch four eggs dropped one after another from a point at a height of 6 ft.

What do you guys think? We've tried making just a simple 'basket' filled with crumpled paper and it doesn't work because the egg just goes right through the crumples straight to the bottom and the eggs break.

Any ingenious ideas?
 
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how about two or three baskets one on top of the other? As soon as it goes through one, it may have slowed down enough to not go through the other?

Also, for the physics of it, force is change of momentum over time (impulse). In this case, you want the lowest force possible on the egg and newspaper, so you want the egg to change its speed as slow as possible (momentum is mass times velocity). How about folding it accordion-like as many times as possible somehow? (and of course, leaving enough space in between each fold to give the egg time to fold the newspaper and not just crash through it)

I think some kind of shape like that would be optimal. Now for the part where they're dropped one after the other, I guess you'll need some kind of ramp to allow the eggs to get out of the way before the next one comes in, and quick enough, although that sounds annoying to have to do.

But yeah, that's the physics of it usually. An interesting case is in cars. The hoods for example, are made to crumple easily upon impact because in a crash, the act of crumpling gives the car more time to change its momentum and thus receive a weaker force to itself (and the driver). I don't know if you knew that, but I think it's interesting anyway. Good luck,

ordirules
 
Your initial conditions as posted don't require that the eggs are captured unbroken. That gives a lot of leeway.
Secondly, you don't say anything about the eggs having to be unboiled at the outset. That again makes a large difference as to how many angles of approach are available to you.
 
I would try a "funnel like" device similar to the thing that was being engineered as a deployable fire escape.
funnel to tube about the same diameter as the egg


dr
 

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