Earlier quoted context omitted.
Reminds me of someone I knew at university whose T-shirt was the definite integral from 10 to 13 of 2x dx followed by a question mark.
...9?
The answer is a nice, round number.
Why roller coaster loops aren’t circular anymore
71–80 of 110 posts
Re: Why roller coaster loops aren’t circular anymore
#72The book Curves for the Mathematically Curious ( https://press.princeton.edu/books/hardcover/9780691180052/cu... ) has a whole chapter about the shape used instead of a circle, complete with equations and derivation. Highly recommended
Re: Why roller coaster loops aren’t circular anymore
#73Earlier quoted context omitted.
No, he’s not wrong. The exit is about 20 ft further forward than the entrance. A true circular loop the entrance and exit would be directly side by side.
That would be a helix, not a circle.
Right ... no rollercoaster loops can be truly circular - in this universe anyway.
"You can check-out any time you like But you can never leave!"
Re: Why roller coaster loops aren’t circular anymore
#74Earlier quoted context omitted.
...9?
The answer is a nice, round number.
Re: Why roller coaster loops aren’t circular anymore
#75Earlier quoted context omitted.
If you're trading a horse for the car, a seatbelt might not be the first thing you'd think of. I don't think our views on danger have changed, it's just that any new technology requires a period of adjustment to it.
Our views have changed. We used to throw lawn darts, have fireworks, guns all over. Not even helmets on motorcycles. When I was a kid, we used to rid maybe 6 kids in the back of a pickup truck flat bed. That was normal . It would not only be illegal today, but probably considered very immoral. Hockey players didn't even wear helmets, not even the goalies (!). Nobody wore helmets when I grew up skiing, now almost ever…
When I was a kid, we used to rid maybe 6 kids in the back of a pickup truck flat bed.
where i live, because of paucity of transportation means, it is not uncommon to have the back door of a car straight open and 3 kids sit there, dangling their feet. that is considered very normal in these parts of the world.
Re: Why roller coaster loops aren’t circular anymore
#76This seems to be the source material: https://www.datagenetics.com/blog/march42014/index.html Vox re-heating a gizmodo article[0] which re-publishes (with permission) the one above. [0]: https://gizmodo.com/why-roller-coaster-loops-are-never-circu...
And in fact Data Genetics is s great blog with loads of interesting content on maths, statistics and simulation.
One that I've used as inspiration for a programming class I was teaching is his analysis of Snakes and Ladders: https://datagenetics.com/blog/november12011/index.html
Re: Why roller coaster loops aren’t circular anymore
#77Earlier quoted context omitted.
Also seen in the planning of curves in roads (where jerk corresponds to the rate at which a steering wheel must be turned) and railways. And this is also why the passengers jerk of a vehicle jerk backwards after it comes to a complete stop. Their muscles statically counter the relative forwards acceleration of their torsos during braking and require time to react to the acceleration suddenly going away. This effect c…
This effect can be prevented by gradually letting off the brake before reapplying it fully upon stopping, but few drivers and rapid transit systems are aware. This is surprising to read. Everyone whose car I've ridden in knows to do that, and it's only in extremely urgent and unexpected stops where it's neglected. Also, when fully stopped, only minimal pressure should be necessary to keep the car still.
Older drivers seem not to know this, in my experience at least.
Re: Why roller coaster loops aren’t circular anymore
#78Earlier quoted context omitted.
This effect can be prevented by gradually letting off the brake before reapplying it fully upon stopping, but few drivers and rapid transit systems are aware. This is surprising to read. Everyone whose car I've ridden in knows to do that, and it's only in extremely urgent and unexpected stops where it's neglected. Also, when fully stopped, only minimal pressure should be necessary to keep the car still.
Older drivers seem not to know this, in my experience at least.
I think that's more of an indication of their fine motor control deteriorating with age.
Re: Why roller coaster loops aren’t circular anymore
#7914 G's! That would knock you out. There's no way it was that high. I looked it up and it says they tested it on chimpanzees. I'm sure the monkeys were absolutely thrilled.
Could be 14G for a very short period, fist when entering the loop and again when leaving it.
Re: Why roller coaster loops aren’t circular anymore
#80> G-force
I looked up this term to be sure and I'm convinced it's as meaningless as I thought it was and is a strange way of saying “force” or in this case a centrifugal force.