Is there a way to calc this feat?

[DavidTPPM]

What I'm trying to calculate is the power of an dense/heavy heavy stick expanding at a very fast pace. Similarly to how bread spreads as you bake it. I have many feats like this but here is one as an example.

At first I thought of using a standard kinetic energy formula but then I realized the mass remains the same and one half of the stick doesn't move at all so that wouldn't work.

So what I'm wondering is if there is a way to account for the decrease in density as the stick spreads and still measure the power of the sticks expansion.

 

[DavidTPPM]

Bump

 

[DavidTPPM]

Bumperino

 

[IDK3465]

Normally for this kind of feat, we’d assume both the volume and mass got expanded, aka, the actual density remains the same and it’s visible expansion is simply the object trying to reach that state of equilibrium. But even if what you say is true, that the mass of the thing remains constant, it still has no bearing on its KE. It doesn’t matter if the object is a chunk of tungsten or a house full of air, if they have the same mass, they have the same KE.

Point is, so long as you have the mass of the thing and the speed it’s center of mass is going, you’ll be good to go.

 

[DavidTPPM]

Point is, so long as you have the mass of the thing and the speed it’s center of mass is going, you’ll be good to go.

So basically if I'm understanding this right, I can just use the expansion speed and mass for the KE like if it was thrown or moved regularly instead of expanded

 

[IDK3465]

So basically if I'm understanding this right, I can just use the expansion speed and mass for the KE like if it was thrown or moved regularly instead of expanded

Actually, I got something wrong, instead of using the final mass, you should use the average between the initial and final (see here).

But other than that, yeah, pretty much. Just make sure to use the speed the center of mass is going rather than the edge of the thing

 

[DavidTPPM]

Actually, I got something wrong, instead of using the final mass, you should use the average between the initial and final (see here).

But other than that, yeah, pretty much. Just make sure to use the speed the center of mass is going rather than the edge of the thing

Oh, great I couldn't find any similar calcs to bump off of. Thank you