Editing Talk:857: Archimedes

What's Cueball trying to lift here that he needs a massive lever and fulcrum? '''[[User:Davidy22|<u>{{Color|#707|David}}<font color=#070 size=3>y</font></u><font color=#508 size=4>²²</font>]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 07:05, 17 April 2013 (UTC)

I think Cueball is just trying to gain ''leverage''. -Justin- [[Special:Contributions/131.111.141.12|131.111.141.12]] 20:39, 5 June 2013 (UTC)

:Cueball wants to move the earth with a lever. But how this should work in space? The hostage is the entire population of the earth. I will add an incomplete tag.--[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 21:34, 5 June 2013 (UTC)

::He is not saying he wants to move the Earth with a lever.  He's either demanding the lever and a place to stand, threatening to kill hostages, or he's using a gun as a prop in a joke.  Either way, the explanation is perfectly fine as it is, no "incomplete" needed.  [[Special:Contributions/108.28.72.186|108.28.72.186]] 02:44, 4 August 2013 (UTC)
:::Hey, the title text was wrong, the Archimedes cite was wrong, it was just INCOMPLETE. I did not undo your edit but I did some enhancements, hoping this is more correct now.--[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 19:43, 4 August 2013 (UTC)

How do you know his hostages are the entire population of earth? ~JFreund

Hey, I'm new here. I was thinking it would be more helpful if someone could give an example of a thriller movie with that quote. Thanks! [[Special:Contributions/162.158.75.148|162.158.75.148]] 22:58, 24 March 2017 (UTC)

The comic and the title text seem to have a supervillain theme with planning to destroy/move the world and threatening to destroy the only antidote (to a presumably self-created plague/poison); the explanation doesn't really go into this apart from mentioning "action thrillers".  [[Special:Contributions/162.158.75.178|162.158.75.178]] 20:27, 26 February 2018 (UTC)

Could someone get into the Earth-moving math a bit more? The figures given sound wrong, but I'm not sure what kinds of assumptions we'd need to make before we could start calculating.
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 The comic and the title text seem to have a supervillain theme with planning to destroy/move the world and threatening to destroy the only antidote (to a presumably self-created plague/poison); the explanation doesn't really go into this apart from mentioning "action thrillers".  [[Special:Contributions/162.158.75.178|162.158.75.178]] 20:27, 26 February 2018 (UTC)
-Could someone get into the Earth-moving math a bit more? The figures given sound wrong, but I'm not sure what kinds of assumptions we'd need to make before we could start calculating.{{unsigned|GreatWyrmGold|01:51, 7 September 2022}}
+Could someone get into the Earth-moving math a bit more? The figures given sound wrong, but I'm not sure what kinds of assumptions we'd need to make before we could start calculating.
-:Not about to do the sums, but for the earth-end fraction of Earth-fulcrum-person lever to move a distance, the person-end fraction must move distance*ratio(PEF,EEF). For fulcrum-Earth-person length=PEF, rather than length=(PEF+LEF), for a shorter lever due to re-using the fulcrum-Earth length, so that's perhaps the more economical setup.
-:You need to swing a lever more than 60° (±30° from a given tangent) around its pivot to get the contact-point travel to go further than the length from pivot to CP (straight-line difference, or length*pi/3 tracing the radius), but at decreasing returns (you could never lever by more than twice the length (straight) or pi times it (semicircumferentially) from the pivot, at ±90° travel), so we might assume we set it up to do no more (though we could also calculate for the maximum).
-:This sets us the distance from fulcrum to Earth, and then the force-multiplication needed for an average human's applicable strength is also the length-multipliple needed for fulcrum to person, allowing us to choose (according to setup, but in both cases overwhelmingly the fulcrum-person distance, so barely different) the appropriate full lever-length. And, having constrained the travel-angle, the person's travel-length (radially?) is directly calcuable.
-:Or, to reverse, perhaps we can discover what assumptions that the Earth-moving figures might have arisen from. The simplest might be what angle of pivot it is, though not knowing if it's radial or direct displacement they give introduces us a small uncertainty, as does the order of contact-points. Less so than the force-multiplier demanded, though, given variations of human physiology. [[Special:Contributions/172.70.86.4|172.70.86.4]] 09:02, 7 September 2022 (UTC)