Because a cooked egg is flat and fried in comparison to a boiled egg.
A hard boiled egg has a hard shell and it is dry inside. With an ordinary egg it is soft inside and sensitive that's why.
A hard boiled egg will spin because it is a solid and the whole egg is one object, a raw egg is liquid and will wobble because the contents are moving around inside the shell and fighting against the spin.
The inside of the egg is now solid, before it was boiled it was a liquid which will throw it off balance if its spun,
if you spin it and put your finger on the hard boiled egg it would stop
Spin the egg! If the egg is raw it will wobble, because it's still liquid inside, if it's hard boiled it will spin on it's end, because it's solid.
boiled egg
Spin the egg on a flat surface, a raw egg will wobble as the contents are liquid, a soft boiled egg will try to stand up, and a hard boiled egg will stand up and spin without wobbling as it is solid inside.
Put the on a flat surface, then give each egg a quick spin. Hard boiled eggs should keep spinning for a longer time. This happens because the interior of the egg is solid, while in the uncooked eggs the liquid inside sloshes around, slowing the egg.
Spin it on a table. The boiled egg will keep spinning since it is solid. The raw egg will not spin much since the solid shell is spinning while the liquid inside is not.
A hard boiled egg is cooked until solid all the way through, a normal 'soft' boiled egg the centre yolk will still be runny, To test the egg you need to do is spin the egg on a flat surface, if the egg is soft boiled it will wobble because part of the egg is still liquid, if it is hard boiled it will spin on end, because the contents are solid.
The raw egg has fluid inside and it wobbles when you spin it but a boiled egg is solid and it doesn't wobble so much as the raw egg
When you can spin it like a top on one end. An uncooked egg will not continue to spin due to the liquid in it. A hard boiled egg WILL continue to spin due to more of a solid internal mass.
I'm not sure what you mean by this. A hard boiled egg will spin faster and roll farther, if that's what you mean.
the yolk,the heavier part of the egg would have coagulated into a solid core in the centre,lowering the centre of gravity of the egg,and hence decreasing the inertia of its rotational moment..hence it spins better when hard-boiled
because the inside of it isn't liquidy any more