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A question for the engineers....
I have a question about egg drop stuff....
An egg typically weighs 55 grams. It takes 25 Newtons to break an egg. If you drop an egg from 25 ft, the egg will be travelling at ~40 ft/sec (12.2 m/sec) or roughly 27 mph when it hits the ground. Assuming no use of a parachute or whatever to decrease the rate of fall, how much force needs to be "absorbed"/redirected or whatever to keep the egg from breaking? How many Newtons (I'm not really sure what that is other than it is a unit of force where it is the amount needed to accelerate 1 kilogram of mass at the rate of 1 metre per second squared) would be exerted on the egg from a drop from that height? I'm stumped. |
My self esteem just dropped a little.
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Why did the chicken cross the road?
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42.
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****, I didn't know there was going to be a test tonight.
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If this is still unsolved tomorrow, I'll do it. I shouldn't even be awake right now.
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Are they Isaac Newtons or Fig Newtons because the amount of force each exerts is wildly different?
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OK, now I'm really confused. I've read online that it takes ~25 Newtons to break an egg, however, using the calculator in nstygma's link, you could drop a 55 gram egg ~5m before you'd reach that 25 Newtons threshold. I can drop an egg from a foot and in all likelihood it will break.
Can someone explain what I am missing here? Thanks |
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But as you increase the distance travelled after impact, you are able to dissipate the energy and reduce the impact force. According to the parameters you described in the OP, you would need to have enough cushioning that the egg could travel about 0.18 m after contact to reduce the impact force below 25 N. |
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<iframe width="420" height="315" src="//www.youtube.com/embed/0g7VoRQPswg" frameborder="0" allowfullscreen></iframe>
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Thought I was the only one who watched that Ryan Swope video. ha
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so many varying answers online http://www.ask.com/answers/239852281...o-break-an-egg also, looks like the store-bought shells are weaker than fresh for some reason http://www.backyardchickens.com/t/31...ard-egg-shells |
Just don't drop the eggs and you won't have to worry about them breaking on the floor.
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The impact force is approximately 35.6818 Newtons, if the impact force required to break it is exactly 25 newtons, you'll have to avoid, mitigate, or redirect 10.6819 newtons to keep the shell from breaking.
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Wow. Weed!
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m -- that is like 4". For an egg landing on a hard surface, the stopping distance is very short. If you use a stopping distance of 0.001 m, probably still too large, you will get a more realistic impact force, and a broken egg. |
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You aren't considering the force generated by rapid deacceleration. Are you sure you are qualified to repair brakes? |
Just put it in sawdust, I did that when we did this in 7th grade and it worked.
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times the square root of; http://img.photobucket.com/albums/v2...nfidel/egg.gif Then take the reciprocal |
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We were given specific rules on the weight of what we could use to stop the egg or protect it. No rules were given about methods for catching it. We put a big laundry basket under there with some really soft pillows and didn't even **** with the egg. We had outsmarted everyone. My buddy dropped the egg and I think he was so sure we'd win he didn't really pay attention and the thing bounced off the side of the plastic laundry basket and smashed on the pavement. We lose. Alex Smith... |
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From what I remember, we the following materials to use: styrofoam solo cup a pipe cleaner 2 popsicle sticks 2 playing cards 2 feet of string 2 rubber bands 1 coffee filter some scotch tape (maybe 6 inches worth?) All of the rest of the class attempted to make parachute type devices that worked with varying degrees of success. I designed a helicopter type device that translated some of the downward energy into rotational energy. The blades were made from playing cards attached to the popsicle sticks. I made a sort of cradle for the egg by making a stretched and suspended rubber band base inside the cup. On top of the rubber bands was the wadded up coffee filter. The egg sat on top of that. I held the egg in place pointy side down with the pipe cleaner. I thought the pointy side down would translate more energy through the shell parallel to the length of the shell instead of perpendicular to the shell (if that makes sense - send the force up through the shell instead of across it). Anyhow, mine was one of the two that actually worked. |
I could have answered that 14 years ago....now, not a chance.
Add more cushion. |
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/Omaha |
scientific olympiad question?
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