Designing a Self-Supporting Egg Catcher: A Scientific Approach

AI Thread Summary
The discussion focuses on designing a self-supporting device to catch a hardboiled egg dropped from 7 meters. Key considerations include the device's height limit of 5 cm and the need for it to be made from various materials while remaining stable on hardwood. Participants suggest calculating the egg's weight and impact velocity to determine the necessary absorption capacity of the device. Ignoring air resistance may simplify calculations, but assuming the egg is spherical can provide a more accurate estimate of its dynamics. The goal is to ensure the egg survives the fall, prompting a scientific approach to the design.
Ering
Messages
8
Reaction score
0
Hello, I'm looking for any ideas that you geniuses may have!
We have to design a device that will catch a (hardboiled) egg from 7 meters high.
It can be made from any material/objects but must be under 5 cm tall (the sides can be as wide as wanted) and must be self-supporting.
The device will be placed on hard wood.

I've been looking up some ideas online, and figured I'd ask on here as well.

Thanks for any ideas!
 
Physics news on Phys.org
Ering said:
Hello, I'm looking for any ideas that you geniuses may have!
We have to design a device that will catch a (hardboiled) egg from 7 meters high.
It can be made from any material/objects but must be under 5 cm tall (the sides can be as wide as wanted) and must be self-supporting.
The device will be placed on hard wood.

I've been looking up some ideas online, and figured I'd ask on here as well.

Thanks for any ideas!

What have you found so far? What are the relevant equations and concepts involved in this type of project?
 
If it was me I would probably weigh an egg, and figure how fast it is going after falling 7 meters. It should offer some clues as to the momentum the device is required to absorb. Ignoring air resistance will give a higher estimate, if that proves unrealistic you can probably get pretty close by assuming the egg is a sphere. In this I am assuming the egg is supposed to survive the ordeal.
 
Thread 'Variable mass system : water sprayed into a moving container'
Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
Back
Top