It IS laymans terms
To be fair, I dont have a clue what a joule feels like let alone many joules.
Smiler rollercoaster at Alton Towers - carriage collision
- Thread starter DJMK4
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To be fair, I dont have a clue what a joule feels like let alone many joules.
One Joule per second is basically 1W. So one Joule would probably feel like a soft kiss on your Johnson.
In the mean time, please enjoy this promotional video from the good blokes over at CERN.
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Soldato
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how many carrots is that ?
It IS laymans terms
Lol. It's not his fault he doesn't understand simple concepts.
What on earth are you on about? Trying to describe a pressure impulse using "energy" isn't layman's terms, it's a poor attempt to use scientific terms which ignores some of the most important variables.
4600 joules is 1 kcal, DO YOU WANT A PIECE OF CELERY DUMPED ON YOUR LEG?
I can think of a better place to stick it. But that would probably violate the second law of thermal dynamics, as well as a few other laws too.
Or gforce, much better indicator of injuries to the human body.
I think we can all agree joules is a silly thing to post.
Be interesting what HSE find out, it's a shame we don't have punitive fines. I can't imagine them being guilt free. Although should go to crime victim fund or something.
I think we can all agree joules is a silly thing to post.
Be interesting what HSE find out, it's a shame we don't have punitive fines. I can't imagine them being guilt free. Although should go to crime victim fund or something.
Quite hard to get to a force from mass and velocity.
Easier to look at it in terms of energy
Or nothing, as it's utterly meaningless.
It's pretty easy to get a force from mass and deceleration. Almost as if there's an equation that does exactly that.
But you can't determine the deceleration. Over what distance did the thing come to rest? Do you know? If so you should tell the accident investigators. It will help them greatly-in addition was it linear? That can make a major difference.
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so it seem smr was likely right and McGray probably wrong to mock the initial assertion that this would run into the hundreds of thousands
But you cannot work out the energy either. As not all energy would be transferred to the injured parties. Especially as the carriages continued to move for a fair while afterwards moving up and down the tracks.
As a few people have said any such numbers are absolutely pointless.
I'd assume that the abundance of cameras and with some hope, that the cart/rail had meters attached to them to calculate velocities and G forces, would at least give some measure of data.
No, but it's a much better place to start estimating than trying to describe an impact which will require pressure (force and area on whatever you want to look at) than giving a value of energy in joules which has no consideration of anything else involved.
But we don't have that data. What we do have are approximate mass and initial and final velocities.
You're coming round to the idea of deceleration then I see. Either way it doesn't actually matter what the numbers were, as someone has already said you can pretty much imagine the impact of a heavy car-like object hitting something similarly heavy at 20mph with your legs taking the brunt.
Terrible accident for those involved and I hope the injuries aren't too debilitating.
Terrible accident for those involved and I hope the injuries aren't too debilitating.
Soldato
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A thread about a roller coaster incident with 4 people badly injured and people are talking about physics? lol.