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# idea for edd drop test

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These are the rules, I need help coming up with an idea so i can write my report, does anyone have an idea?

You will research a design for your egg-drop apparatus and then build it. You will conduct the egg-dropexperiment, document the experiment, and write a lab report that includes an analysis of your design.

Here are the rules for the egg-drop experiment:You may use any materials that you wish to make the apparatus.

You must build two copies of your apparatus because you must perform two separate trials.

•You may not completely cover the egg to protect it. The egg is a model for a piece of equipment that mustbe exposed to the environment. The more egg that is visible, the better. (Placing the egg in a can stuffedwith popcorn is not acceptable.)

•The volume of the apparatus must be no more than 2.0 L (2,000 cm3), about the size of a coffee can.

•The height of the drop must be at least 4.0 m (but 10 m would be better).

•The mass of the object compared to the drop height is an important factor in evaluating your design.•

Dec 5, 2019

#1
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what if you glued the egg to a piece of string/ribbon which was tied to a small helium-filled balloon? make the balloon the right size so that the egg doesnt float away but falls down very slowly and gently

is that allowed?

Dec 5, 2019
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This sounds like it could work really well. It may not even be against the explained rules.

But somehow I doubt if it was what the teacher has in mind.

Melody  Dec 6, 2019
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hmm,  iwould have to see if this is allowed, how would i measure the volume? it has to be less than 2.0 L

jjennylove  Dec 6, 2019
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The volume of the apparatus must be about the size of a coffee can, so use an actual coffee can.  Dropping the coffee can might damage it, so it would be prudent to have some spare cans on hand.

Fill the coffee can with water.  Dissolve salt into the water until an egg placed in it will float.

Drop the water-filled coffee can with the egg floating in it from 4 meters and see if the egg survives.  Keep increasing the height of the drop until the egg breaks, then back off half the distance higher than 4 meters.  For example, if the egg finally breaks at 14 meters, then back off half of the extra 10 meters, for a total drop of 9 meters.

You'll need to devise some way to maintain the orientation of the coffee can as it drops so it doesn't turn sideways; maybe you could glue some fins to it, or drop it inside a hollow tube, or... I'm sure you can think of something better than that, though.

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Dec 6, 2019
#4
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The egg has to be exposed to the environment. It cannot be inside a full can or a full cardboard box.

The water and salt idea is interesting though.

Melody  Dec 6, 2019
edited by Melody  Dec 6, 2019
#6
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yes, it does have to be xposed. however, very great idea nevertheless!!

jjennylove  Dec 6, 2019
#3
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Use an oatmeal box instead of a coffee can, so you can staple inside it.

Get a large balloon and cut it open so that you have a flat piece of soft rubber that will reach across the inside of the oatmeal box with some slack in it.

Staple the rubber inside the oatmeal box to make a sort of sling, or hammock, for the egg to rest on.

Set the egg on the rubber and drop the oatmeal box.  Devise some way to maintain the box's orientation as it drops; you can't let it turn sideways.

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Dec 6, 2019
#5
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The idea of a hammock made of rubber bands is  interesting also.

Melody  Dec 6, 2019
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i think i may be confused with your idea, wouldnt the egg slip out if  i dropped it sideways? could you explain more ? It seems interseting and pausible!

jjennylove  Dec 6, 2019
#10
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jenny, please read what i wrote:  you could not allow the apparatus to turn sideways.

Guest Dec 7, 2019