QUOTE(jd74914 @ Jan 14 2015, 04:50 PM)
It's a lever arm and is showing how you can balance a ton (literally) with a much smaller object.
The actual math is a sum of moments about the pivot point. What that means is that for the 914 to stay in the air like that the (weight of the 914) x (distance from 914 to the post) must equal the (weight of the rock) x (distance from the rock to post).
Right. I understand what it is. The question I want answered is, WHY???!!!
At what point did someone say, "Hey I want to make a giant lever arm balance. You know what, I've got a 914 that I can use! Yeah, let's do it!"
That's what I want to know. How did this come to be??!!
It's like that line from Lewis Black's standup, where he was following someone and he heard them say, "If it weren't for my horse I'd have never spent that year in college." And it's been driving him crazy ever since to figure out what the hell it means!!