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Why a raw egg resumes spinning after being briefly stopped

Why a raw egg resumes spinning after being briefly stopped

@PhysicsOnTap · June 15, 2026

Think of a raw egg like a bucket of sloshing dishwater. When you spin it, everything inside gets a massive dose of momentum.

If you tap the shell to stop it, you've only paused the packaging. Inside, that gooey mess of yolk and white is still swirling like a frantic whirlpool. It doesn't care about your finger.

The moment you let go, that internal liquid momentum slams back into the shell, dragging the whole thing back into a spin. It’s basically the egg's liquid guts refusing to quit.

Wait, so does a hard-boiled egg just stay dead stop then?

Spot on. A hard-boiled egg is like a block of frozen leftovers. The inside is glued to the shell, so when you tap it, the whole system grinds to a halt instantly. There is no rogue liquid sloshing around like a spilled soda in the back of a moving car.

Because it is one solid unit, the guts cannot keep moving without the shell. You kill the shell's speed, and the whole party ends right there. No ghostly resurrection, just a cold, dead stop on the counter.

And what's with that weird wobble when the raw one spins?

That wobble is the sound of internal physics screaming. Because the yolk isn't perfectly centered, it’s like putting a heavy brick in a spinning washing machine. That shifting center of mass sloshes around, throwing the shell off balance like a lopsided microwave turntable.

It’s a kitchen disaster in motion. The liquid guts fight the shell's path, creating a chaotic tug-of-war that makes the egg stumble like it’s walking through a puddle of spilled beer.

A hard-boiled egg is a balanced, solid unit, but a raw one is as stable as a stack of stale pizza boxes in a breeze.

Does spinning it way faster eventually smooth out the stumble?

Actually, you’d just make the kitchen disaster more violent. Spinning harder pins that heavy yolk against the outer shell, like a person stuck to the wall of a spinning carnival ride.

Instead of smoothing out, the lopsided weight digs in. The 'tug-of-war' gets more intense because the liquid guts are pressing harder against the shell, making the stumble even more erratic and aggressive.

It’s like trying to fix a shaky washing machine by turning the speed up to 'Max Chaos.' You aren't balancing the load; you're just giving the brick more power to wreck the joint.

But if the yolk stays pinned, shouldn't that actually stabilize the whole mess?

Nope, because 'pinned' is just a fancy way of saying 'permanently lopsided.' Think of a wet sneaker stuck to one side of a spinning dryer. It’s not moving around anymore, but it’s still a heavy lump making the whole machine jump across the laundry room floor.

The yolk is that one heavy, uninvited guest leaning entirely on one side of a tiny rowboat. No matter how fast you row, the boat is going to tilt and drag. You’ve just locked in a permanent, high-speed imbalance.

It’s like trying to fix a wobbly ceiling fan by duct-taping a cold slice of pepperoni pizza to just one blade. Increasing the speed doesn't center the weight; it just gives that pizza more leverage to rip the fan right out of the ceiling.

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