Shot Fired Into Frozen Lake

[Rucker61]

Don't try this at home, but it was pretty cool:

http://videowall.accuweather.com/detail/videos/trending-now/video/4602887471001/check-out-what-happens-when-you-fire-a-bullet-into-an-ice-covered-lake?autoStart=true

[KAPA]

Cool! Didn't realize a pistol would put that much spin on it. Good find assuming that is real.

[clublights]

It's Real .....


watch your ears at the end of the video .. some ones a jackass.


https://www.youtube.com/watch?v=3qiPg9y627Y

[SAnd]

Cool! Didn't realize a pistol would put that much spin on it. Good find assuming that is real.
9mm M882 ball out of a Beretta M9 is 90,000 rpm.
45ACP out of a 1911 is 39,800 rpm.
5.56 NATO M855 out of a M4 is 237,000 rpm.
50BMG M33 out of a M2 is 141,000 rpm.

[Rucker61]

It's Real .....


watch your ears at the end of the video .. some ones a jackass.


https://www.youtube.com/watch?v=3qiPg9y627Y

These guys are going to so miss that job.

[TRnCO]

fascinating.

[fitz19d]

Ya, try posting any other video of the phenom then the one with speaker breaking troll ending. Or give us the second mark. I expected obnoxious but nothing that bad.

[O2HeN2]

So this Mythbuster's spinning-bullet-on-ice experiment is why I've always thought they got a different experiment wrong. They had an episode on "Can bullets shot into the air kill?". They came to the correct conclusion that those shot at an angle can (a shallow trajectory), but those shot straight up won't. Right up front they made an assumption that bullets shot straight up would no longer be stabilized as they came down, so they'd be tumbling. So they determined the terminal velocity for several tumbling bullets (in a tube with air blowing up it to "suspend" the bullet in the stream, then measured the velocity of the air stream) and found the velocity was insufficient to kill.

But.

Given this experiment and how long the bullets spun even with the drag of a film of water as they were spinning on ice, they'd spin for much longer in air.

If you run the numbers, a bullet leaving the muzzle at 1250 (generic 9mm velocity) fired straight up (in a vacuum) will come back down in ~80 seconds (at=v, t=v/a, t=1250/32, t=39 then multiply by 2 for it to come back down). Even less time when it's not in a vacuum and you have air friction slowing the bullet down as well.

But even using the worst-case time of 80 seconds, I think the bullet could still be stabilized (albeit it would be coming down base-first) and therefore have a much higher terminal velocity than the Mythbusters came up with.

Given that this is their last season, we may never know the answer... :(

O2

Gosh durnit, I gave away the fact that I'm an engineer... :)

[davsel]

FAKE

[PugnacAutMortem]

FAKE

You must not have video capabilities on your computer.

That is freaking cool how that works. I love the sound the bullet makes while it's spinning.

[hatidua]

I gotta go find a frozen pond and give this a whirl!