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Old 09 March 2007, 19:21   #1
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Physics question

This little puzzle is a teaser.

If one has a Torrid (polo mint shape) of Steel/Iron that has an internal measurement of 1 cm and gets heated, does that 1cm diameter hole get bigger or smaller as the metal increases in size in all proportions when heated???
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Old 09 March 2007, 19:35   #2
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Bigger of course!!!

Hence you heat up a flywheel etc to heat shrink it onto a shaft.
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Old 09 March 2007, 20:10   #3
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That must be an Irish Engineers question Beware of Irish brain surgeons!!!!
Also that is how steel tyres are shrunk on to locomotives.
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Old 09 March 2007, 21:20   #4
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Erm... I stole this.

Understanding Engineers - Take One

Two engineering students were walking across a university campus when one said,
"Where did you get such a great bike?"
The second engineer replied, "Well, I was walking along yesterday,
minding my own business, when a beautiful woman rode up on this bike,
threw it to the ground, took off all her clothes and said, "Take what
you want."

The second engineer nodded approvingly and said, "Good choice; the clothes probably wouldn't have fitted you anyway."

Understanding Engineers - Take Two

To the optimist, the glass is half full.
To the pessimist, the glass is half empty.
To the engineer, the glass is twice as big as it needs to be.


Understanding Engineers - Take Three

A priest, a doctor, and an engineer were waiting one morning for a particularly slow group of golfers.

The engineer fumed, "What's with those blokes? We must have been waiting for fifteen minutes!"

The doctor chimed in, "I don't know, but I've never seen such inept golf!"

The priest said, "Here comes the greens keeper. Let's have a word with him."

He said, "Hello, George! what's wrong with that group ahead of us?
They're rather slow, aren't they?"

The greens keeper replied, "Oh, yes. That's a group of blind fire
fighters. They lost their sight saving our clubhouse from a fire last year, so we always let them play for free anytime."

The group fell silent for a moment.

The priest said, "That's so sad. I think I will say a special prayer for
them tonight."

The doctor said, "Good idea. I'm going to contact my ophthalmologist
colleague and see if there's anything he can do for them."

The engineer said, "Why can't they play at night?"


Understanding Engineers - Take Four

What is the difference between mechanical engineers and civil engineers?
Mechanical engineers build weapons and civil engineers build targets.

Understanding Engineers - Take Five

The graduate with a science degree asks, "Why does it work?"
The graduate with an engineering degree asks, "How does it work?"
The graduate with an accounting degree asks, "How much will it cost?"
The graduate with an arts degree asks, "Do you want fries with that?"

Understanding Engineers - Take Six

Normal people believe that if it ain't broke, don't fix it.
Engineers believe that if it ain't broke, it doesn't have enough features yet.


Understanding Engineers - Take Seven

An engineer was crossing a road one day, when a frog called out to him and said, "If you kiss me, I'll turn into a beautiful princess."

He bent over, picked up the frog and put it in his pocket.

The frog spoke up again and said, "If you kiss me and turn me back into a beautiful princess, I will stay with you for one week."

The engineer took the frog out of his pocket, smiled at it and returned It to the pocket.

The frog then cried out, "If you kiss me and turn me back into a Princess, I'll stay with you for one week and do ANYTHING you want."

Again, the engineer took the frog out, smiled at it and put it back into his pocket.

Finally, the frog asked, "What is the matter? I've told you I'm a beautiful princess, and that I'll stay with you for one week and do anything you want. Why won't you kiss me?"

The engineer said, "Look, I'm an engineer. I don't have time for a girlfriend, but a talking frog, now that's cool.
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Old 10 March 2007, 07:01   #5
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Quote:
Originally Posted by codprawn
Bigger of course!!!
Quote:
Originally Posted by Limey Linda View Post
That must be an Irish Engineers question
That might be a small brained person's answer.
Aidan was pondering whether the increase in width of the toroid material due to expansion compensated for the increase in diameter of the toroid due to circumferential expansion.
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Old 10 March 2007, 07:03   #6
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That might be a small brained person's answer.
Aiden was pondering whether the increase in width of the toroid material due to expansion compensated for the increase in diameter of the toroid due to circumferential expansion.
Of course I bow down to your far bigger brain.......
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Old 10 March 2007, 07:04   #7
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The engineer said, "Why can't they play at night?"
Seems reasonable to me, Nos...
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Old 10 March 2007, 07:04   #8
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Of course I bow down to your far bigger brain.......
Cool.
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Old 10 March 2007, 10:42   #9
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That might be a small brained person's answer.
Aidan was pondering whether the increase in width of the toroid material due to expansion compensated for the increase in diameter of the toroid due to circumferential expansion.
Thank you JW, I could not have put it beter myself. I obviously know the answer at this later stage of my life but when I teasd with it years ago I couldnt figure out the logic (exactly for the reason you mentioned). But of course every Barman knows if you heat two glasses stuck together, heat the outer one first or the inner one will break it......Its amazing how many glasses are broken each day.
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Old 10 March 2007, 10:48   #10
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Engineers

Well done Nos4r2, I enjoyed them, especially teh glass half full and empty one.

Really getting the hang of these faces now JK
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