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Driver Passes Out and Crashes

newtboy says...

I knew Acuras had flight capabilities....when I hit a K rail at 55 mine went at least 8 ft up....sideways....before riding the K rail back down (fortunately upright). Those cars are tanks....flying tanks.

Penn & Teller's Helium Bag Escape Trick

justaguess says...

I'm thinking that the bag was open at the bottom when Teller stepped in. He stays upright long enough for us to see that his head is in the bag, then quickly crouches, pops under at the bottom, and seals the bag after himself.

He tugs gently on the bottom to remain hidden, and so the guy holding the string doesn't notice the weight change.

We never get to see the bottom, because the lights are still too dim immediately after he is revealed.

The helium quickly lifts the bag too high for us to see the bottom, but it does have a sort of heart shape at one point, suggesting a seal in the middle of the bottom, rather than the straight edge a factory-made bag would have.

Cyclist Uses Aerodynamics Over Leg Strength

newtboy says...

When I rode 30+ miles a day, almost 30 years ago, I used to do something similar on downhills. I wouldn't take the toe clips off, but I would hang my ass over the rear wheel with the seat in my gut. This flattened my body and made me more aerodynamic (but not nearly as much as he is) and put my weight farther back and lower, meaning I could brake much harder without going over the front. His center of gravity probably goes higher in this position with his legs that high. Since my feet never left the pedals, I could still pedal if needed and get back upright in an instant.

I never raced, so I don't know if this would have been against any specific rules, but taking your feet off the pedals that way would make you far less stable, imagine if he had to brake or swerve, and reattaching at speed is no walk in the park either, so it's probably considered a likely hazard to others and banned...but that is just a guess.

Fairbs said:

do you know the rationale with banning? Potential danger to other riders? It's interesting to me that it would be banned. Kind of like the first guy that went over backwards on the high jump, it seems like a legit innovation.

Motorcyclist hits mattress at 80km/h in Clem 7 tunnel

BMW Concept Bike

eric3579 says...

Look Mutter, nein helmut!

“The vision vehicle will act with foresight and is able to protect the rider at any time,” says Heinrich. Driver assistance features will continually monitor the environment, the route, the speed, the angle of lean, and myriad other factors, intervening to ensure the rider can’t crash. Gyroscopes keep the bike upright when stationary, so you can’t even fall when stopped. BMW’s roughly an eternity from actually telling riders to ditch traditional safety gear, but things like traction control, hill start assist, and antilock brakes are already making it harder to kill yourself on two wheels.
https://www.wired.com/2016/10/bmws-motorcycle-tomorrow-feels/

Payback said:

I like how its technology gets rid of the need for a helmut.

Thwarting An Attempted Darwin Award Winner

poolcleaner says...

It's more natural to hold a phone in portrait (vertical) than in landscape (horizontal). Typically landscape requires 2 hands -- and if filming landscape with one hand, it becomes easy to lose grip.

I know it ruins the cinematic quality, but he didn't film the dude for our entertainment, he filmed it as proof.

It's also a logistical issue, as it is easier to grip a phone vertically than horizontally. This is the reason why there are so many videos filmed in this mode. Especially in situations where people are unable to use both of their hands to stabilize the video, such as running, when in danger, or at the top of a bridge...

Also, his subject is a human which stands upright, so filming vertical allows him to distribute his subject matter across the entire canvas; whereas landscape would cut off the primary focus and distribute the background on either side of the subject, which is unimportant to the situation, in place of filming the man from head to toe in a single frame.

PlayhousePals said:

stop stop stop ...Fuck me ... vertical video warning mate! Bloody hell

Swimming in a pool of 25 million water orbs

Ginrummy33 says...

So what would you have done if (despite physics laws) you jumped in and sunk straight to the bottom and had been unable to climb or swim to the surface? It seemed like there was a lot more water than air between the balls, so I guess you probably would have drowned. Did you have somebody standing by with a rope or something the first time? I saw several shots where some of the kids jumped in head first but it always cut away before it showed how easy or hard it was to get back upright and above water. I see this being a little more dangerous that how lighthearted it was presented. But it still looks fun.

A Ford Flathead V-8 Rebuild Time-lapse

newtboy says...

HA!!!!
The "rusted through" on my 70 Bronco had progressed to "rust held together by spit and paint" in many places...but many more were rusted through all the way around, like my hood which had no edge when I bought it. The windshield frame was only upright thanks to the glass, it peeled off by hand leaving me a windshield with no frame. I've since replaced both, but I still have at least one hole through every panel I haven't replaced. My front fenders are more rust than metal at this point. I have replacements, but I'm waiting for it to disassemble itself. ;-)

Payback said:

The patina on my 73 Mustang has progressed to "rusted through" in more than a few places so I'm resto-modding it. It's only a Grande convertible so the VIN doesn't decode rare at all, so I feel ok customizing it.

Man shot while live streaming on Facebook

Shepppard says...

..I think the internet may just be making me completely cynical.

Honestly.. I just, if this is real, I feel bad. But it just seems fake. Everything about it, we hear one gunshot, camera drops. Somehow, miraculously lands upright, not pointed at the ground. Then, we get a PERFECT shot of the gunman standing just on top of the perfectly angled camera shooting well off-screen.

That's also the biggest thing for me, apparently the guy gets shot and as he falls drops his camera, but the gunman is CLEARLY shooting at something in the distance, and not at the ground.

Woman Charts 2 Years of Progress on Violin

MilkmanDan says...

One thing I liked about that in particular:
She looked like she was having fun, even when she wasn't so good.

I've played bass (electric, never tried an upright) for about 15 years. I only got *really* serious about it after getting Rocksmith 2014 -- went from playing once in a while to almost every day. I'm a LOT better than I was, can play a LOT of songs at least decently (say, 97%+ accuracy in Rocksmith), but still nowhere near as skilled as some.

BUT, it has been FUN every step of the way. Especially after trying Rocksmith, which presents "sheet music" in a visual, tab-like format that I can now effectively sight-read (it takes some getting used to, but works great once you figure it out). A lot of people are reluctant to try learning an instrument because they think it won't be fun, particularly in the early going. They think they will suck.

Well, in my experience that is half right. Yeah, you're going to suck (I certainly did). But it is loads of fun, in spite of that. And you get better fast -- the human brain is a pretty amazing thing. One day, you try a new song and think "damn, that is so hard I'll *never* be able to play it right". Then a month or two later you think "oh yeah, I should give that a second try" and all of a sudden it is very doable. Awesome to have those little moments of revelation when you realize that "hey, I am definitely getting better at this!"

Atlas, The New Generation

dannym3141 says...

The way it pushed itself into the upright position was eerily reminiscent of the old stop-motion-feeling stuff i remember from ED209 in robocop. There is genuinely going to come a point, sooner or later, where the robot starts to remember which jerk kept pushing him over when he was young and vulnerable.

supreme skills - tops

newtboy says...

?
If it's balanced, with the center of gravity below the balance point, why would it become unstable at any rpm? The lower the CG, the more stable it would be...even when stationary.

What I'm describing would 'hang' from the contact point, like the difference between a gyroscope on the table and one hanging by a string, the one hanging would never 'fall over' because gravity works to keep it upright.

Built the same as they built them here, but with the outer ring much lower, there should be no contact until it wobbles, which in my mind it never should.

Yes, I didn't think it would spin more, or faster, just be more stable, because lowering the CG ALWAYS makes things more stable, no? My design should self right if it gets off balance, gravity should pull it back into balance, rather than off balance like a normal top.

I just wondered if, somehow, centrifugal force coupled with some other forces might make it try to flip over....or maybe if the CG isn't above the contact point, it's not a 'top'?

rbar said:

Good question. I think that the entire device is unstable no matter what, its impossible to keep it straight no matter where the point of gravity as long as it needs to balance on a single tip. So zero speed would mean tip over in all cases unless you make a more stable tip (square) which would mean it cant spin very well which means you havent made a spinning top.

You can find more about the physics of the spinning top here:
http://hyperphysics.phy-astr.gsu.edu/hbase/top.html
and here:
http://physics.stackexchange.com/questions/271/why-dont-spinning-tops-fall-over

So what is the optimal distance of the center of gravity to the tip?

There are several things working at the same time. Most importantly is the energy. You need to store as much energy as possible so that the top can spin for as long as possible. When the top slows spinning the friction at the tip becomes larger (the precession becomes bigger) so it starts to lose more energy and slows the spinning even more. You store energy by adding weight with a center of mass that is further away from the tip. When the top then "falls" the center of gravity moves down and reduces potential energy. Due to energy conservation kinetic energy goes up meaning speed of precession or of spinning goes up and creates a force pushing the top back up.

Off course, more mass means more friction at the tip, so there is for sure an optimal here, most likely depending on mass, size and shape of spinning top, etc.

Last but not least, more rotation speed I assume also means more friction, so its a trade-off.

If you move the center of mass down below the tip, well, if you move it as far off as you would above, the energy you can save is about the same, but the entire thing would be harder to build and you would need to make sure the sides fit around the ground plateau. Also, when the precessions become bigger the sides will hit the plateau, meaning game over.

In the end you are better of keeping the center of gravity above the tip point.

supreme skills - tops

newtboy says...

Hmmm. I wonder why neither team decided to lower the center of gravity below the contact point, since they would be spinning on the tiny raised cylinders? It seems it would be easy to make the outer ring hang below the point, so it would stay upright at 0 rpm. Does that somehow make it unstable when you spin it?
*quality craftsmanship and design

one of the many faces of racism in america

newtboy says...

WHAT?!?
What a racist, disgusting thought.
So, you're saying all black men and women are publicly disgusting people that need their actions hidden to be employable?!?
Er Mer Gerd! Did you REALLY just write that? Do you really think that? No wonder you're defending the racist douchebag.

To your other 'point'.
How can I tell he 's taking my tax dollars for certain...I can't...but it's insanely more likely that he is, being unemployed and unemployable, taking unemployment than it is that the protesters are (like he claims). Most ridiculous asshats like this want to THINK they are 'too proud' to take what they call a 'handout', right until that second it's available to them, then it's 'free money they'd be stupid to not take'. The states with the most hard core, anti welfare right wingers are also ALWAYS the states that take the most tax dollars and give the fewest. These 'hard working proud' people ARE the welfare queens they complain about.

EDIT:And can you please explain how one kind of 'tax dollar' is different from another 'tax dollar'? All public programs are paid into by tax payers. Public 'unemployment insurance' is no different from any other 'welfare' program...you're forced to pay in, you're allowed to take out if you prove you qualify. That silly thinking is how idiots convince themselves that THEY are hard working upright people and THOSE PEOPLE are just lazy takers, when they are all doing the exact same thing, taking from the public fund for their personal needs.

Lawdeedaw said:

"Absolutely it's fair to expose people's public actions and tie it to them personally. 100% fair and proper. Period. People should own their actions, some need to be forced to own them."

Newt, this is a racists dream come true...it's what's keeping black men and women (who predominately are abused into our criminal justice system) unable to be productive citizens. This grudge holding helps no one.

Passed Out In Bed, Floated On Pond-Prank

artician says...

This is the best. You couldn't have wished for a better reaction than that bolt-upright realization and scream at the camera. Then his floundering toward shore, culminating in that soggy miffed face at the very end. What a goldmine!



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