Possible world record
/forum/topic/845602/2

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The Image
Registered: Dec 04, 2004
Total Posts: 2979
Country: United States

For the sake of human life on the ground, I hope his next attachment plate has some safeguards built in.



astrolucida
Registered: Jan 07, 2005
Total Posts: 1661
Country: Finland


astrolucida wrote:
I think what might have happened is that the mounting plate acted like a leaf, spinning quickly around but dropping relatively slowly to the ground.

As the two cameras most certainly have a different weight but not that much different, the system is not in balance and hence one side of the plate would turn down and that would put the whole system spinning. Also, the plate would absorb most of the force when hitting ground.

Oosty wrote:
I don't think the relative mass makes any difference at all. Gravity acts equally on all bodies irrespective of mass which is why a brick and a penny dropped from the same height will hit the ground simultaneously.


Of course they will drop at the same speed - after all, they were attached together by the mounting plate.

However, the mounting plate would not stay horizontal if the weights at its ends are not the same. There is force of gravity affecting to the plate and to each camera. The force depends on the weight of the object, so a heavier object is subjected to a larger force. Though, getting a heavier object moving does require a proportionally larger force, so if the cameras were dropping individually (and in vacuum), there would be no difference in their speed.

But in this case the cameras were attached together, on the mounting plate, and there is air. The air causes a force that resists the falling. This force is acting on the underside of the mounting plate, equally everywhere. However, the heavier camera is pulled more by the gravity, so the plate tilts towards that side.

Now comes the part where only speculation is available. The mounting plate will most certainly begin rotating, but does it rotate horizontally or vertically or both, regularily or irregularily? How much does that rotation affect it aerodynamically? Anyone willing to borrow two cameras and a mounting plate for some tests?



hans98ko
Registered: May 01, 2008
Total Posts: 641
Country: Singapore

Something I found unusual about is the amount of dirt on the camera and almost none on the video giving me an impression that the camera fall on soft ground and the video end up on hard ground or water. If that is the case the video actually performed better in this drop test.



Thats Fresh
Registered: Aug 13, 2005
Total Posts: 2608
Country: United States

wow. maybe the mud cushioned the fall.



Gary Lee 44
Registered: Jan 01, 2009
Total Posts: 6884
Country: United States

Takes a lickin!



omarlyn
Registered: Feb 19, 2004
Total Posts: 4066
Country: United States

I imagine the video was already running when he jumped...so, did the video tape survive showing a free-falling camera hitting the ground? It would be great to post it (if it survived of course)

Omar



ppastoris
Registered: Feb 17, 2009
Total Posts: 3
Country: Ukraine

omarlyn, you read my mind



Paradisiac
Registered: Jul 08, 2006
Total Posts: 62
Country: Ireland

Magic, just magic! I'm....not going to try this though. haha



ShutterbugJ
Registered: Jan 20, 2009
Total Posts: 184
Country: United States

Awesome. I wonder what would have happened if the XT had a battery grip and a 17-55/2.8 IS?

My old point and shoot fell down a cliff and hit a ledge about 6 feet down. When I got it back, it kept working (and still works). It was a 2MP HP.



kresearch
Registered: Apr 20, 2009
Total Posts: 6
Country: United States

Oosty wrote:
I don't think the relative mass makes any difference at all. Gravity acts equally on all bodies irrespective of mass which is why a brick and a penny dropped from the same height will hit the ground simultaneously.


True. Forget about the cameras though. I wonder then... How does the skydiver make it alive... Uhmmmmm...



Adam L
Registered: Aug 15, 2008
Total Posts: 399
Country: Australia

what saved it was it's weight.

If it was a 1 series, the impact would've created a mile-wide crater and the camera would be on it's way to the Core.



brainiac
Registered: Nov 22, 2005
Total Posts: 7524
Country: United Kingdom

Adam L wrote:
If it was a 1 series, the impact would've created a mile-wide crater and the camera would be on it's way to the Core.


Lucky it's weather sealed.



dasrocket
Registered: Jul 13, 2006
Total Posts: 2038
Country: Canada

I thought the 1 series come with parachutes.



MTBtrials
Registered: Feb 04, 2008
Total Posts: 1372
Country: United States

I doubt there is any sensor dust left on that XT



Patrick Elliott
Registered: Feb 04, 2008
Total Posts: 355
Country: United States

Calin Leucuta wrote:
I sold my first DSLR (Rebel XT) to my buddy from Florida


Mental note: If I see a post on the B/S forum, username Calin Leucuta, selling Rebel XT "for a friend" - DO NOT BUY!!!



chiliman
Registered: Aug 07, 2005
Total Posts: 276
Country: United States

Sounds like another successful UPS delivery.



Yakim Peled
Registered: Nov 18, 2004
Total Posts: 16903
Country: Israel

Truly an amazing story. The last pic is my favorite.

Happy shooting,
Yakim.



nfoto
Registered: Feb 20, 2009
Total Posts: 315
Country: United States

chiliman wrote:
Sounds like another successful UPS delivery.


that's probably how he found it.... must've been a door mat out there for it to land under....



Mike V
Registered: Jan 18, 2006
Total Posts: 1411
Country: Australia

Normally when stuff like this happens you keep it as secret as possible.

Otherwise you might be getting a visit from the FAA for not securing your camera rig properly (and not having a safety leash).

I believe the fine is rather large as someone can easily get killed this way.





BrianO
Registered: Aug 21, 2008
Total Posts: 8552
Country: United States

carlsbadbum wrote: ...Never underestimate the strength of composite plastice, that's why Boeing is building the world's first composite jetliner.

Which had its first flight on Tuesday morning. (No, I didn't take any photos.)

It was cool (but not as cold as last week) and raining here at launch time; and due to weather the planned flight was cut from 5 hours to 3, and it stayed west of the Cascade Mountains; but it was a successful flight by most counts.

Gives another meaning to "Plastic Fantastic."



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