Register | Sign In


Understanding through Discussion


EvC Forum active members: 66 (9164 total)
8 online now:
Newest Member: ChatGPT
Post Volume: Total: 916,468 Year: 3,725/9,624 Month: 596/974 Week: 209/276 Day: 49/34 Hour: 0/5


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   A test of your common sense
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


(1)
Message 78 of 137 (665950)
06-20-2012 7:05 AM
Reply to: Message 44 by Taz
06-18-2012 11:58 AM


Haha, I find it amusing how dense some of you guys are. Yeah, took me about 30 seconds to make that drawing with paint. Didn't think I'd deal with a bunch of engineer wannabes who think real world sketches look like text book problems.
Well, common sense doesn't tell one the conventions of engineering diagrams, such as whether the beam merely rests on the triangle or is attached to it. Your subsequent explanation with the fat women and the two mental patients makes the problem clear in a way that your diagram does not, except to specialists.

This message is a reply to:
 Message 44 by Taz, posted 06-18-2012 11:58 AM Taz has not replied

  
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


(1)
Message 89 of 137 (665972)
06-20-2012 12:06 PM
Reply to: Message 84 by Taz
06-20-2012 10:52 AM


On the left side, the beam is held by a pin to prevent it from moving horizontally but allow it to rotate. On the right side, it is held up by a roller.
That is what we needed to know. What was the strange thing on the left side meant to represent? Once you've told us that this strange triangular thing means that "the beam is held by a pin to prevent it from moving horizontally but allow(s) it to rotate" then we can start thinking about the question. Until then, we can't even begin to guess at the answer, 'cos we need to guess at what the triangular thing means.
You've conflated two completely different questions. One is a question about physics, the other is a question about what a technical specialist in a particular field means when he draws a triangle and a circle. You can't test people's common sense until you've explained that to them, any more than you can test our common sense about a question phrased in Russian until you've translated the question from Russian into English. Common sense does not provide a right or a wrong answer to the question Когда?

This message is a reply to:
 Message 84 by Taz, posted 06-20-2012 10:52 AM Taz has not replied

  
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


(3)
Message 91 of 137 (665975)
06-20-2012 12:34 PM


Oh, and my answer.
I should say that the greatest curvature of the beam under those forces would be either between A and B or (symmetrically) between C and D. I would expect it to give way where it is most bent.
My common sense, garnered over many years of experience, suggests that I don't know and should ask an engineer.
Edited by Dr Adequate, : No reason given.

Replies to this message:
 Message 92 by Coyote, posted 06-20-2012 3:04 PM Dr Adequate has not replied

  
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


(1)
Message 113 of 137 (666083)
06-21-2012 8:59 PM
Reply to: Message 109 by Taz
06-21-2012 5:35 PM


Taz writes:
No need to know what the beam is made of or all the other nonrelevant details that members here insisted they needed.
Taz writes:
Usually, the beam will fail in the region adjacent to one of the loads. However, if the beam is elastic enough, it may fail in the middle region.
Edited by Dr Adequate, : No reason given.

This message is a reply to:
 Message 109 by Taz, posted 06-21-2012 5:35 PM Taz has replied

Replies to this message:
 Message 115 by Taz, posted 06-21-2012 9:07 PM Dr Adequate has replied

  
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


Message 117 of 137 (666093)
06-21-2012 9:53 PM
Reply to: Message 115 by Taz
06-21-2012 9:07 PM


Silly DrA, hasn't it occurred to you that that's part of the answer? You mean to tell me life is more complicated than a classic text book problem?
What?
P.S:
Taz writes:
No need to know what the beam is made of or all the other nonrelevant details that members here insisted they needed.
Taz writes:
Usually, the beam will fail in the region adjacent to one of the loads. However, if the beam is elastic enough, it may fail in the middle region.
Taz writes:
Your reply is the most common misconception that I was referring to. Most people would say the middle, which is of course wrong.
Edited by Dr Adequate, : No reason given.

This message is a reply to:
 Message 115 by Taz, posted 06-21-2012 9:07 PM Taz has not replied

  
Dr Adequate
Member (Idle past 306 days)
Posts: 16113
Joined: 07-20-2006


(1)
Message 120 of 137 (666103)
06-21-2012 11:03 PM
Reply to: Message 119 by Bolder-dash
06-21-2012 10:32 PM


Your attempt to make your standard lies and nonsense look remotely relevant to the thread is profoundly unconvincing.

This message is a reply to:
 Message 119 by Bolder-dash, posted 06-21-2012 10:32 PM Bolder-dash has not replied

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2023 by EvC Forum, All Rights Reserved

™ Version 4.2
Innovative software from Qwixotic © 2024