The key to a successful egg drop experiment? Drop it on its side

Eggs are less likely to crack when dropped horizontally vs. vertically, contradicting conventional wisdom.

May 26, 2025 - 18:30

The key to a successful egg drop experiment? Drop it on its side

Egg drop competitions are a staple of high school and college physics classes. The goal is for students to build a device using bubble wrap, straws, or various other materials designed to hold an egg and keep it intact after being dropped from a substantial height—say, ten meters (nearly 33 feet). There's even a "naked egg" version in which a raw egg is dropped into a container below. The competition is intended to teach students about structural mechanics and impact physics, and it is not an easy feat; most of the dropped eggs break.

MIT engineering professor Tal Cohen decided to investigate why the failure rate was so high and reported her team's findings in a paper published in the journal Communications Physics. "The universal convention is that the egg should be in a vertical orientation when it hits the ground," Cohen told Physics Magazine. But their results from controlled trials simulating the egg drop challenge in the lab calls this conventional wisdom into question.

It is not an unreasonable assumption to make. Another popular physics party trick is to walk on several cartons of eggs without breaking them. Typically it only takes about five and a half pounds of force to crack a single eggshell, much less than the average adult human. As I wrote for Slate back in 2012, "The key is to align the eggs so that the narrow pole is pointing upward, and step in such a way to distribute your weight over the entire surface area, to avoid overloading any one eggshell." (Being barefoot also helps.)

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