this just does not make sense ...
Originally posted by ffakr
Insignificant?
I have a 15" LCD imac.. total weight is somewhere around 27-28 lbs.
I just ordered a 18" lcd for work... Aside from the $999 price tag, it weighed over 25 lbs with the tiny speakers and the power brick.
Let's make some estimates...
iMac base: 15-20lbs
18" lcd (surrounding plastic, no speakers, no power brick): ~15lbs.
Lexan is heavy after all. You think that putting 15lbs on an arm, and pulling it out in front of a 15-20lb base isn't going to make it tilt over? You'd need to leave the cd drawer out as a kick stand ;-)
Where did you learn physics?
I am in no way a physicist, but I do know that physics involves many more variables than weight.
Firstly, I actually went to the Apple Spec page to get REAL weight figures for the displays and the iMac in order to have some refernce to what ADDED weight, the iMac would have to support with a 19" display. Here are the spec's:
15" Studio Display: 11.5 lbs
17" Studio Display: 14.55 lbs
23" HD Display: 25 lbs
15" iMac : 21 lbs
Given that most of the material involved in a stand-alone display is not necessary for one attached to the iMac, there is significant weight savings. More importantly, a 19" display (if you use the above numbers as reference) equates to about 18 lbs. You are accurate in your 15 lbs estimate, assuming that there is 3-4 lbs saved from no feet, ports, or cabling.
More importantly, look at the comparative numbers: a stand-alone 19" display is perhaps 2-3 lbs heavier than the 17". I am confident that the iMac base can support an added 2-3 lbs.
Regardless, the physics of a cantilever is mostly at work in the iMac. You don't even consider it in your post. There is a good reason why Ives designed a 10" diameter base and not a 5" diameter base.
In conclusion, the question of where you learned physics is irrelevant. It is obvious you never even learned physics.