COM vs COG

[agor95]

HI All

C.O.M. Center of Mass where the mass is equally distributed around a point.

C.O.G. Center of Gyration where the weight is equally distributed around a point.

C.O.P. Center of Pressure - just put this in for completeness.

Can the C.O.M. and C.O.G. be in different places for an object?

Can one be arranged to search for the other without reaching it's location?

Regards

[eccentrically1]

The locations are practically identical for our situation (small wheels).
You'd need much bigger wheels to have them at noticeably different locations.
So the second question is irrelevant.

[agor95]

Could this be a way to find a method without a large device?

https://www.youtube.com/watch?v=1VPfZ_XzisU&t=582s

P.S. Near the end you will see a babies milk bottle. Is there something on the Space Station we should know about?

Regards

[eccentrically1]

The fluid filled bottles flipped because they were decaying from highest energy state to lowest. Just like anything does.
The bottles are probably for lab things rather than babies.

For what you're thinking, COM and COG, this actually proves that they're in the same location. Axes are just axes.

[agor95]

Axes are just axes.

I like how you rotated that onto itself. A good circular axiom.

In the YouTube we can see a simulation, image below, what would happen with one of the small masses being a little larger?

Saying that I still do not know why someone would create C.O.G. if it is the same location as C.O.M.

P.S. One can think on the larger masses being of slightly different masses.

Regards

[eccentrically1]

They're not the same location, but for what we're looking for, they are.
the difference between them is a deeply hidden constant in the universe.

[andyblues]

funny i was reading the other day that the earths moi is controlled by the amount of ice on the north and south poles when the north pole becomes lighter than the south in certain position namely the Greenland ice sheet then the poles do swop as there moi and the barry center i think it is called no longer supports this balancing wobble and the planet spins in a curve or a spiraling motion north to south and the planet moves in specific areas back in to a ice age very quickly, this is new to me and most people from what i can see , the evidence of sudden climate change is well established but the cause still seems to be a bit of a mystery, may be this experiment could confirm just this theory by some body building this in model form probably simulated to show this effect, awareness of the importance of our balance is a nice lesson for us all ,nice find Agor food for thought thank you Andy, sorry for being of topic i will reconsider your questions more deeply and see if i can add any thing.

[agor95]

I think the risk of an Earth Flip shows that such possibilities are being kept quiet.

Note. The material supplied in this thread is not new to this forum.
However the forum format means we have to bring back items to help
newer members to see the thought provoking finds.

The shift of the Earth crust and internal Earth Fluid flips leave a record on the surface historic record.

Good Searching

[agor95]

The fluid filled bottles flipped because they were decaying from highest energy state to lowest.

I am thinking the fluid flip affect could be a transfer of rotation from the bottle to the fluid.
Then back again and in the process a change in orientation.

As the bottle/fluid will slows down the flipping show continue as it slows.

I understand a transition break like the top upturning is a one time event.
I thought that could happen in a gravity field. However the bottle flip has no gravity to flip up against.

p.s. There is a really rich area of study that members should post information on.

All the Best

[eccentrically1]

I am thinking the fluid flip affect could be a transfer of rotation from the bottle to the fluid.

The single flip is from the loss of rke. If you watch the video, he tells you that rotating bodies find their maximum MOI (minimum KE). For the bottles, that is along the other axis from where they began (Minimum MOI, maximum KE).

[agor95]

For the bottles, that is along the other axis from where they began (Minimum MOI, maximum KE).

I re-viewed the video - you are correct.

Regards