Rotational Force FEA, cats and toast

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Someone who attended my lecture on SALRE at the weekend sent me this today.

Its a good question. Good FEA thought experiment too. Someone has already had a go...



But I'm unhappy with this The Fbt value is clearly wrong as it appears to be acting on the buttered side. I feel the key may lie in the relative axes of rotation for both cat and toast. Also the vector quality of the forces as illustrated would impart a lateral componant to the system which is rarely observed in either cats or toast in In vivo studies.

I'm going to give this one a crack. Perhaps some of the FEA masters could do likewise? I think we should offer a prize for the best answer, JIA style. Its a challenging puzzle.

Any thoughts?

 

2 thoughts

1st - depends

2nd - whats the effect of friction ?

Ill be off now - taxi

 

My first thought?......perform a Cat Scan.

 

Just a thought, but if the ground reaction force exerts a force equally to the toast and the cat, would this not begin a rotation of the toast/cat complex and lead to perpetual motion?

 

I don't think the buttered toast has a central nervous system quite like a cat.

 

What would happen if you dropped a cat in outer space. There is no up and down so would it just keep spinning, or would it just be still. Damn this thread

 

How do you drop a cat in outer space.

 

That's what I mean - things like this kill me. If a tree falls in the woods, does it make a sound if there is no one there to hear it?
OK so I would just have to let the cat go, not drop?

 

Yep you let go of the cat.

 

If you all don't leave this poor cat alone I will report you all to the RSPCA, the Cat's Protection League and any other pro-cat organisation I can think of.



We are not amused.


Catfoot

 

Where's Schrödinger when you need him?

P.S. Cat's are rubbish:
http://www.youtube.com/watch?v=KONGLIlMhiU

Toast is great:
http://www.youtube.com/watch?v=WJmKStqugMc

See?

 

Like this:
http://www.youtube.com/watch?v=fUIokQ36rbA

Still lands on it's feet- Just need to get NASA to strap some toast to its back next time.

 

If you watch from 10 secs on, it does just keep spinning.

I was only joking too!

Love the toast video Simon

Robin

 

I love the way the fella at the start just slings it against the wall.

For those that don't know or recognise him, that was Paul Young singing "Toast"
http://www.youtube.com/watch?v=1BkGCkwJCWE&feature=related

Who did a cover of this:
http://www.youtube.com/watch?v=qHYOXyy1ToI&feature=related

Which takes us to Manchester....

"So much to answer for" and other cheerful lyrics by The Smiths

Which takes us to Manchester....

Except that all roads lead to Sedgley

Which was an album by The Moneygods
http://walsallmusicscene.7785.users.btopenworld.com/local_music_scene14Vinyl.htm

Who were a local band when I was a youth, and funny as ****- used to have special spot prizes and quiz rounds and hand out sandwiches between songs. I won a vibrator at a Christmas show once.

Yeah, this'll be them http://www.youtube.com/watch?v=1iYE7RBTx0E

COOL. "I, wish you were here"

 

Depends on the relative rotational directions of the toast and the cat. If one rotates clockwise, and the other anti-clockwise, then the cat will rotate in the direction and at the speed of the dominant rotational force. As Someone said, the toast has no brain or nervous sytem to control it's habits of rotation, so it is probable that the cat can adapt and rotate quicker to achieve it's aim of not landing on it's back or head (I guess that evolution has eliminated most cats who used to do that). Toast doesn't usually breed, therefore evolution has not eliminated it's nasty habit of landing buttered side down. Perhaps an enterprising forum member could attach sensors to the toast and cat as a research project, because the world needs answers to these important questions. It won't be me, because I actually have a life.

 

Frankly I resent the implication that I, amongst others, spend unreasonable amounts of time on this forum speculating about the possibilities of cat/toast interphase issues and other such subjects

Nothing could be further from the truth! (I think we need a Pinocchio smiley)

RP

 

Methinks he doth protest too much!

There may also be a consideration in terms of whether the force is A: purely rotational, B: the butter side is attracted to the ground, or C: the dry side is somehow repelled from the ground (in the manner of a ++ or -- Magnet.

 

Different, but it aint a hen. First Floyd number that my Jack mastered;

http://www.youtube.com/watch?v=11UUVzlI6hI

 

Well spotted Robert. Actually, I have no friends other than Podiatry Arena.

Thought I should investigate further. Unfortunately, the cat didn't survive, and the toast is now inedible (unless you like cat flavours). Awaiting police and RSPA as I write.

 

Good points Robert. It raises the possibilities of anti-jam or anti-butter forces which science has ignored up to now. My own experiment (on the unfortunately deceased cat and the now inedible toast) seems to refute the anti-jam/anti-butter hypothesis.

 

I hope the cat c£@ppe& on your toast and pi$$ed in your butter.

Catfoot

Still not amused.

 

What if the cat is allowed to eat the toast afterward? Would that be better?

I think the cat might enjoy this experiment.

HA! Busted.

Its a very special group who become interested in questions like this. Like it or not my friend, you opted into that group! :empathy::drinks

Hmmm. I'm not so sure. You know how if you drop a forkfull of bolognase its always the tomato which lands in your lap, never the tagliatelle. I would suggest that this might be due to an anti pasta force and I'm sure I've heard of that before somewhere. Possibly in "new scientist".

 

Ian said

Robert said

Not sure that New Scientist supports or refutes the anti-jam/anti-butter hypothesis, but I may have met the anti-pasta force today in clinic. He will never eat pasta, referring to bolognase as "bollocknasty". Scientific? You decide.

Unfortunately will have to tear myself away from this interesting, intellectual and thoughtful discussion with the towering intellects who contribute so much to the advancement of scientific podiatry. Got to eat and watch crap television.

 

Catfoot said

Are you psychic catfoot??? That's how it "volunteered" to advance the cause of science!

 

Ian,
re post 23#
With respect, you are confusing anti-pasta force with anti-matter force, which is created when you squeeze a zit onto the bathroom mirror.

regards

Catfoot