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## Question

Somewhat in the vein of a previous Professor's riddle,

another physics Prof proffered this puzzle:

Two cats sat on a tin roof. One slid off.

Which one didn't?

The answer is not "the other one."

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Bravo.

You gave a highly cogent, complete and lucid explanation.

You did everything except give the [what now should be embarrassingly obvious] answer.

Sorry, the answer is: The Sphynx cat.

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Something like...The cat that did not fall had a higher coefficient of friction (or furriction)?

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Something like...The cat that did not fall had a higher coefficient of friction (or furriction)?

Soooooooooo close.

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Bravo.

You gave a highly cogent, complete and lucid explanation.

You did everything except give the [what now should be embarrassingly obvious] answer.

Wait... I did answer it. Quote: "The one that didn't fall was a Sphynx..."

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Wait... I did answer it. Quote: "The one that didn't fall was a Sphynx..."

Not necessarily.

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Thought process...... If "one fell off" then only "two" is left sitting safely.

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the one without fur?

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Thought process...... If "one fell off" then only "two" is left sitting safely.

Nope. That would make three.

One of the cats slid off.

Which of the cats did not?

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Somewhat in the vein of a previous Professor's riddle,

another physics Prof proffered this puzzle:

Two cats sat on a tin roof. One slid off.

Which one didn't?

The answer is not "the other one."

Ok, last try before admitting defeat, as I mustn't know the answer (which I thought I did).

Two cats sat on a tin roof. One slid off.

Which one didn't?

The one with high enough coefficient of friction.

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Not necessarily.

Ooooooooh, I see what you mean.

The Sphynx cat.

Edit: I already said that earlier. So disregard this post.

Edited by random7

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Isn't this a popular math teacher joke?

2 cats on a roof, which falls off?

Answer: The one with the smallest mu.

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Isn't this a popular math teacher joke?

2 cats on a roof, which falls off?

Answer: The one with the smallest mu.

lol, that's funny

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Isn't this a popular math teacher joke?

2 cats on a roof, which falls off?

Answer: The one with the smallest mu.

Bingo.

, as alluded in the OP."]

F = [Greek letter mu] N

Where N is the normal force and F is the frictional force.

So the one that did not slide off is the one with the bigger [or higher] "mew".

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but mu isnt pronounce like meow (which i guess is suppose to be the pun)

also this is suppose to be a pun puzzle so if i got the pun part of the answer isnt the rest just a more clever slash different way of saying it or is the whole pun not fur-iction

the one that had to much static in his fur-iction

or furiction had too much static

or the one with higher static fur-iction (like a staticy fur i mean)

or the one that had just rubbed a balloon on himself and got to much static furiction

or the one god saved from dieing because he worshiped jesus and had never (im gonna stop myself here)

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Isn't this a popular math teacher joke?

2 cats on a roof, which falls off?

Answer: The one with the smallest mu.

Bingo.

F = [Greek letter mu] N

Where N is the normal force and F is the frictional force.

So the one that did not slide off is the one with the bigger [or higher] "mew".

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I think it might have something to do with the weight of the cats.

I think the thinner cat won't fall.

Because since they are sitting on the physically identical roofs, the only thing that can cause changes is the frictional force.The fatter cat will produce more velocity on falling from roof because of its weight and will totally excceed the frictional force which lets them to stay on the roof and so it will fall from the roof.

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if i remember physics I right (havent taken it since freshmen year of college)

the force equation for the cats is static friction force has to be over come so its the... weight of the cat into the roof times friction= the force along the roof (this is the moment before its overcome)

so (g)sin(theta)(mass)(mu)=cos(theta)g(mass) so all the matters is sin(theta)mu=cos(theta) or is less than obviously

so mass doesnt matter all that matters is as theta gets bigger mu can get bigger (obviously it doesnt change im saying for the cat to still fall it could theoretically be bigger) specifically mu can be almost equal to cotan(theta) or smaller so anyway the angles are the same so mu's are different

(i dont know y bad puns anger me they just do)

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ruling out furrction...

One cat was facing away from the peak of the slope, while the other was facing the peak of the slope.

Due to the way cats sit, this caused their centers of gravity to differ greatly.

The one facing the peak formed closer to a 45 degree angle with the slope (toward the peak-side), resulting in a more stable center of gravity.

The one facing the edge would appear to "lean forward," causing a near-perpendicular angle with the slope, causing his center of gravity to pull him forward (toward the edge).

Therefore, the cat that did NOT fall off the roof was the one that was facing the slope.

thoughts?

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... maybe i should read spoilers prior to posting, now knowing its a phsyics-pun question

oh well, i still like my answer.

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"The other one" is ruled out in the Hint.

Furrriction properties definitely are involved.

Getting close.

Let's assume the cats sit on physically identical roofs.

It's something about the cats themselves that makes the difference.

One cat has claws and the other had them removed

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The alive one doesn't slide.

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Puss 'n Boots--he didn't burn his paws on the hot tin roof.

Or, perhaps a Tennessee Williams fan--had to keep in line with the title

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I LOVE Physics!

...bigger Mu! (or mew

)...

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"The other one" is ruled out in the Hint.

Furrriction properties definitely are involved.

Getting close.

Let's assume the cats sit on physically identical roofs.

It's something about the cats themselves that makes the difference.

The one fatter one but what ipsherman said rocks

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alright, I don't think it's been said yet, but under the assumption that the one who did not fall was a sphinx, I'd like to point out that sphinxes have wings and can presumably fly or at least keep themselves aloft or in this scenario atop roofs

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