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and you dont like your job?
May require a cherry picker! Head for heights required and dont drop your screwdriver!! 😮
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33 Replies
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I’m sure they would be well strapped in
It’s the people that had to build it that i pity for 😮
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Yuck! Went all dizzy just looking at that!
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It’s all relative isn’t it?
It doesn’t matter whether you fall fifty feet, or five hundred, the result is the same.
It’s like sppeding. Speeding doesn’t cause accidents – it just improves the quality.
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imagine dropping your squeegee at that height 😕
then again, imagine being hit by the squeegee falling that distance 😮 -
Think of the person taking the photo!!!
Adam
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quote Adam McGuire:Think of the person taking the photo!!!
Adam
ok, imagine dropping your camera at that hieght :lol1: :lol1:
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I think from that height, a measly penny would go through the pavement! Mind you, thats mass concentrated over a small area….a person would land heavier but over a bigger area, probably more damage to the person than the pavement!
Just googled the Photographers name….some cracking pictures on his website….He seems to like doing the aerial shots!
Adam
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I grew up around the Red Rd flats in Glasgow, I remember when I was a very young boy and I seen a body lying on the ground…. they had been hit on the head with a 2 pence and it went straight through there skull.
There was no blood or anything just a body lying there, I think the penny must have been thrown off the roof or something 😕
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Scary stuff!! I’d hate to have seen that at a young age!
Adam
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quote Adam McGuire:Scary stuff!! I’d hate to have seen that at a young age!
Adam
na, I’ve seen alot worse at a young age….. growing up there was fun at times 🙄 Trust me that wasn’t the first and it wasn’t the last dead body
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quote Adam McGuire:I think from that height, a measly penny would go through the pavement! Mind you, thats mass concentrated over a small area….a person would land heavier but over a bigger area, probably more damage to the person than the pavement!……..The terminal velocity of a dropped penny varies between 20mph (tumbling & updraft) to perfect edge fall at 73mph – the kinetic energy in a penny will barely dent the pavement. It is possible to THROW a penny this fast! As for a body – T.V. (tumbling) is around 60mph at 100m – maxing out at 180mph from 700m plus – it’s gonna make a mess either way…it’s all about the deceleration curve.
quote John Wilson:…. they had been hit on the head with a 2 pence and it went straight through there skull….If a direct edge hit then the kinetic energy in a 2p could do this in exceptional cases, but likely it was ‘launched’ in a cataput to achieve the high speed & energy required.
Practical experience of this is 0.2 & 0.5g BB’s at 293fps (200mph) – they can bruise the skin surface but that’s about it – between 1 joule & 2.2 joules of energy. 14 joules will leave very nasty welts (eg. 3.5g paintballs) – 70ish will embed something in you. I think a 2p is about 5grams – ‘fired’ at 100mph – 56 joules ow!…200mph – 112 joules em, lethal.
Sorry for being a geek…. :lol1:
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Blimmey Dave 😮
I love reading your posts.
It always reminds me I should have tried harder at school. 😕
Same goes for Rodney Gold’s posts.
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If Rob Lambie dropped a penny it would hit him on the back of the head as he went down to pick it up :lol1:
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Following on from what David has said – I was just reading at the weekend that there have been instances of people that have fallen into the ocean having fallen from a high flying aircraft and survived. Apparently air resistance means there is a maximum speed that a body would reach no matter what height they fell from. If the person hits the water at the right sort of angle they can survive the impact. I wouldn’t like to test it out though 😕
Gives me some comfort next time I’m on a plane – knowing that it is possible to survive a fall from a great height.
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I didn’t think you could fall faster than gravity pulls you down, and that’s 7.15m/s if my school memory’s correct 😕
John
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quote Phill:Following on from what David has said – I was just reading at the weekend that there have been instances of people that have fallen into the ocean having fallen from a high flying aircraft and survived. Apparently air resistance means there is a maximum speed that a body would reach no matter what height they fell from. If the person hits the water at the right sort of angle they can survive the impact. I wouldn’t like to test it out though 😕
Gives me some comfort next time I’m on a plane – knowing that it is possible to survive a fall from a great height.
phill a few years ago and passenger plane with around 100 people on it crashed in some place like singapore killing everyone…. but a 3 year old girl survived. not the crash though… when the play was coming down her mum apparently waited as long as possible before flinging her daughter out of a hole or missing door on the plane.
workers in paddy fields below heard the plane roar and looked up seeing the plane come down they also seen the girl falling from the plane. the girl survived with little damage because she hit the shallow water in the paddy feilds and then was rescued by the workers. 😕 -
Have a look on this site for some tales of unintended freefall.
http://www.greenharbor.com/fffolder/ffresearch.html
Steve
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quote John Harding:I didn’t think you could fall faster than gravity pulls you down, and that’s 7.15m/s if my school memory’s correct 😕
John
Gravity is taken as a constant at 9.81m/s2 (although it varies slightly depending on where you are on earth). True, you can’t FALL faster than this…but you can be propelled 🙂
Factoring in air resistance (drag coefficients & also air density at low altitudes slows the falling ‘mass’. Why a skydiver in a ‘pencil’ dive has been clocked at silly speeds at high altitude (31,000m+) a claimed 614mph in air only 1.5% the density of that at sea level it’s falling in a virtual vacuum, but people with baggy clothing / failed parachutes or controlling a flat decent to give max surface area have ‘survived’ some huge drops into marshes, water & snow. It’s the final / maximum deceleration (G) that gets you.
Just checked something…a racing driver in 1977 survived a 107mph crash that decelerated him in 26inches to 0 – a whopping 179.8g although 100g is reckoned to be lethal to most humans.
added: Gravity is a powerful thing…falling off a 4′ ladder can be lethal, so can stepping back off one to check if the sign is level (duh! 😳 )
I think it’s waaay cool that the space shuttle returning to earth is almost entirely ‘gravity powered’ and clocks over 17,000 mph in the outer atmosphere (mach 24?) – the rest of the slowing down to a landing speed of about 200mph is achived using ‘air friction’ as a brake.Dave
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altitute speed and decelaration dont matter, its luck that lets some survive when most pop there clogs, I know, I fell from another planet and survived 😉
Peter
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That reminds me…..My Beano hasn’t arrived this week! (<( (oogle) (sleep) :doh:
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quote Mike Grant:That reminds me…..My Beano hasn’t arrived this week! (<( (oogle) (sleep) :doh::lol1: :lol1:
nik
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George, very funny, very funny 😀 😀 😀
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There is a show over here called "Mythbusters" on the discover channel. They dispell, or prove urban myths. They showed that a penny could not puncture the skin from any height, it just doesn’t have the mass. I wouldn’t want to test one on my head though.
-Marek -
quote Marekdlux:There is a show over here called “Mythbusters” on the discover channel. They dispell, or prove urban myths. They showed that a penny could not puncture the skin from any height, it just doesn’t have the mass. I wouldn’t want to test one on my head though.
-Marekwe get the same prog here as well,
very informativePeter
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quote Marekdlux:There is a show over here called “Mythbusters” on the discover channel. They dispell, or prove urban myths. They showed that a penny could not puncture the skin from any height, it just doesn’t have the mass. I wouldn’t want to test one on my head though.
-Marek….great show! It’s a favourite of mine :thumbsup: …my wife even refers to me as ‘Adam’ (of "am I missing an eyebrow…." fame) or ‘my little geek’ as I’ve settled down to many an evening of Mythbusters, ‘How it’s made’/ ‘How do they do that’ and ‘Scrapheap Challenge’, pausing only briefly to get Top Gear, Never mind the full stops & bits of Ray Mears rubbing two sticks together in some forsaken part of the earth…. another fun filled night at the Rogers’ residence!!
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Do you have "dirty jobs" yet? That’s a funny show, the host, Mike Rowe, goes to different jobs and works for the day. Things like trash man, coal miner, anything dirty. He’s funny and usually the people he works with are wild. The guys that fix the bricks in the old sewer systems under some major cities are the best.
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quote Marekdlux:Do you have “dirty jobs” yet? -MarekWe have that show coming in the new year according to the promos. Mythbuster is my all time fav tho. I hate it when I miss an episode. Only show that keeps my kids totally engrossed.
On the subject of falling, We have had a few deaths jumping from the Sydney Harbour Bridge and Gateway Bridge in Brisbane, even workman falling from the gantrys, and while most die (a heart attack before they hit the water they reckon) some workman have lived because their tools fall ahead of them and break the water before they hit. If you hit still water at speed it is akin to hitting concrete (do a belly flop off a diving board as an example) but if the water surface is broken before you hit, the survival rate is very good.
A change of underwear would be in order I’d suspect.
Just my 2cs. I’m going to start calling dave ‘Professor’ from now on 🙂 too
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Just ‘a fill in’ to Professor Rogers science paper. The Grand Prix driver mentioned was a lad called David Purley and his crash occurred at The British Grand Prix, Silverstone 1977.
I saw the remains of the car afterwards! What remained of the chassis and engine/gearbox was less than 4 foot long!
His short life story, he was killed in a flying accident a couple of years later, reads like that of a real schoolboys hero
http://www.forix.com/8w/nl73-dp.htmlSteve
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quote Shane Drew:……… some workman have lived because their tools fall ahead of them and break the water before they hit. If you hit still water at speed it is akin to hitting concrete (do a belly flop off a diving board as an example) but if the water surface is broken before you hit, the survival rate is very good..
Ah, Mythbusters disproved that one too 😉 (And buster was torn limb from limb) It’s much less dense than concrete, displaces when impacted but still is one hell of an impact. You just need to see their ‘experiments’ (OK, fun) with bullets fired into water. Subsonic 9mm handgun rounds stay intact but the faster ones eg. M1 Garand (30-06) & a 50 cal (Barrett) utterly disintegrated – even the FMJ rounds had the copper jacket stripped off!
I personally think there may be a small bit of truth to the tools landing first stories. If there was sufficient material falling ahead of the unfortunate party it may aerate / foam the water enough to reduce it’s density and allow a ‘softer’ landing. Like throwing a handfull of pebbles into a pool as opposed to one big stone. I don’t think a couple of screwdrivers will do it though!! I think Peter made the best explanation for the survival of impossible odds – just chance.
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quote David Rogers:quote Shane Drew:……… some workman have lived because their tools fall ahead of them and break the water before they hit. If you hit still water at speed it is akin to hitting concrete (do a belly flop off a diving board as an example) but if the water surface is broken before you hit, the survival rate is very good..
Ah, Mythbusters disproved that one too 😉
Yes I saw that episode too. But, there have been too many workers survive a fall, whos hammers and machinery broke the water ahead of them for me to be able to dismiss it so easily. Just about EVERYONE that has jumped from the bridge without any tools has died, a few with tools falling a head of them survived. Its the only episode that I was not totally convinced of, given the huge press coverage here when a survivor is pulled from the water 🙁
Granted, it is probably was a coincidence, but they even had a guy that was trying to suicide, but did the perfect dive apparently. Broke both wrists and arms, shredded his skin, but he did survive. The explanation was that his fists broke the water and he dove thru the opening….
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quote Shane Drew:Granted, it is probably was a coincidence, but they even had a guy that was trying to suicide, but did the perfect dive apparently. Broke both wrists and arms, shredded his skin, but he did survive. The explanation was that his fists broke the water and he dove thru the opening….
THAT I believe entirely, if you enter at the right angle a la ‘diver’ if arms out head first the area of water that needs to be displaced on entry is minimal and also the head & neck are protected from snapping back. The water doesn’t really have a ‘surface barrier’ to break it’s all just displacement & deceleration, why if you slap water with a flat open palm it hurts but side on it doesn’t. Water does have molecular surface tension that can support say insects & form droplets but this is a very weak bond.
The diving through the opening has one plausible explanation – but timing is everything! As ‘every action has an equal and opposite reaction’ (why you get those stunning freeze-frame photos of the ‘rebound’ in liquid) – if the water is displaced ahead of the faller…but not so close that they ‘catch up’ with it when the object declerates on the surface…and just far enough away so that the water is already being displaced downward and not yet ‘rebounding’ you could say you dive through an opening.
Thanks for making me think twice Shane!!
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..then there was the fella that jumped off a bridge with a bottle of fairy liquid. He quick wittedly poured out the contents ahead of him as he fell. The detergent hit the water first, thus lowering the surface tension of the water sufficiently to allow him the survive the impact.
Unfortunatley he choked and drowned in the bubbles 😕
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quote David Rogers:Thanks for making me think twice Shane!!
erm… no problems Prof.. I’m battling to think once, so you are eons ahead of me already… My excuse? Its late and I should be in bed… 😕 (its the best excuse I can come up with at short notice 😳 )
Phill, you’re a nutter :lol1:
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