Lenny Conundrum #99

lmblackjack21 · **Posts:** 223 **Joined:** Sat Oct 09, 2004 4:49 pm

This is going to sound silly--but what do they mean when they say deflect?

maruka · **Posts:** 567 **Joined:** Fri Jul 02, 2004 6:34 am

lmblackjack21 wrote:

This is going to sound silly--but what do they mean when they say deflect?

It means bend.

lmblackjack21 · **Posts:** 223 **Joined:** Sat Oct 09, 2004 4:49 pm

So basically, how much the beam is going to bend with the 6000 lbs?

hulahon · **Posts:** 126 **Joined:** Fri Nov 19, 2004 5:50 am

without fiddling with numbers, I doubt steel bends that much. but to work the numbers, another story. I am starting to think it is a low low number, that has been posted on the board.

hallucinating · **Posted:** Fri Jan 07, 2005 5:13 pm

Can I PM someone to compare?

And if so, do I give them my answer or is that not cool? I've never checked an answer before.

maruka · **Posts:** 567 **Joined:** Fri Jul 02, 2004 6:34 am

You can pm me.

sirclucky · **Posted:** Fri Jan 07, 2005 5:35 pm

Haullicinatng. Genearlly you do something that you can convert the answer to and not back. E.g. the some of the digits. Doing that helps you see if answers are most likely the same, but people who dont have the answer cant get the answer

reesecal · **Posts:** 25 **Joined:** Tue Dec 07, 2004 9:29 am

read a bunch of responses about how people liked this one.

i didn't

pretty sure it's just nps saying 'you complain you dont get an easy one? take this!'

booooooo neopets

Starchaser · **Posted:** Fri Jan 07, 2005 8:45 pm

I know I already asked, but no one's seemed to answer, so: what are the standard units for each of the variables we're given? (deflection, load, modulus) etc.

I'm not sure of my answer, so I just want to make sure I didn't screw up by forgetting to convert something. :roll:

matchbow · **Posted:** Fri Jan 07, 2005 8:49 pm

Ok. this sucks. Stupid structural engineering. no one in grade 12 who i asked knows this and google gives some weird things that i don't get. Are they standing in the middle of the bar or on the end? and are they standing on top of each other or in a mass? Oh well. I gave a random answer

vtothec · **Posts:** 1422 **Joined:** Sat Dec 04, 2004 1:02 am

standing in the centre of the beam i believe the question says

tinikidi · **Posted:** Fri Jan 07, 2005 9:54 pm

Think I've got it, but I'm not sure. I'm only a seventh grader... :cry:

I'm glad I don't learn this stuff yet. It would burst my poor brain!!

Incendiary9 · **Posts:** 56 **Joined:** Sat Jul 31, 2004 6:54 am

Ive never head of any of these terms, and Im fairy good in physics/architecture. I found the formula and solved the answer. Some people have asked this before..but I want to ask again

Who can help confirm my answer (im pretty sure its correct)?

David Munch · **Posted:** Sat Jan 08, 2005 4:53 pm

vtothec wrote:

thumps head i nearly found the right formula but its asking for distance so it cant be right

It should ask for this, since the 'normal' formula expects the mass to be positioned at the end of the beam. In this case you have to calculate for the mass being in the middle of the beam.

My answer is pretty small, and it does make sense, since the beam is made of steel.

vtothec · **Posts:** 1422 **Joined:** Sat Dec 04, 2004 1:02 am

David Munch wrote:

vtothec wrote:

thumps head i nearly found the right formula but its asking for distance so it cant be right

It should ask for this, since the 'normal' formula expects the mass to be positioned at the end of the beam. In this case you have to calculate for the mass being in the middle of the beam.

My answer is pretty small, and it does make sense, since the beam is made of steel.

Oh thank you for that I got the answer awhile back *points a few pages back* I found the right formula that one i had was definitely wrong but ive got an answer and i put it in a couple of days ago that *crosses fingers* HOPEFULLY is right

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Lenny Conundrum #99

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