Everything you ever wanted to know about Hooke's law.
http://asms.k12.ar.us/classes/physics/GENERAL/KENNETH/HOOKE.HTM
I'm certainly not well versed in physics...but those who are may be able to explain this website to you.
Just trying to help.
Not quite everything,
The equation I posted was,
extension in mm = constant
force in Newtons
It now follows that the extension is proportional to the applied force.
It is a simple method of calibrating a spring balance in Newtons.
It is basic schoolboy science.
It has been variously described on here as,
1. CUDDLES
Well, no-one else seems to have done so, so I'll bite. There is no such equation. You have made it up. No-one else in the entire history of the world has ever used, or even written down, that equation. This is because it is wrong. In fact, it is not even wrong, it is complete and utter nonsense.
Units of extension are distance (m). Units of force are Newtons (kg.m.s-2. These are not the same thing. What you call an equation is no such thing because the two sides are not equal. That is what the "equa" part of "equation" means.
2. CurtC
It's not just not right - it's not even wrong. That's a nonsensical, meaningless equation you keep asking about.
MK, you're way out of your league here. You should stick to the softer material, like who knew what and when. Physics is way beyond your grasp.
3. Spitfire
He's either trying to say "extension = a constant * force," in which case he's simply gotten the spring constant on the wrong side of the equation and lost a negative sign, or else he's trying to say exactly what his equation states, which means he's also mistaken "a constant * force" for "a constant force." Note that Hooke's Law could be expressed with the spring constant on the other side of the equation and no negative sign, but the constant would have to be the negative multiplicative inverse of the way it's ordinarily stated in physics.
Assuming the above is correct, however, what I'd like to know is what Malcolm thinks Hooke's Law has to do with proving that a 767 could not penetrate the wall of the World Trade center, as it only applies below the limit of plastic deformation. It might conceivably help us determine the aircraft fragments' expected path after penetration, but that's about all I can think of. Does anyone else have any ideas on this?
4. Jaydeehess
well I suppose you are attemptinmg to show the equation for force in an ideal spring.
f=kx
where k is the characteristic spring constant for a particular spring.
However, the way you wrote it has millimeters equaling newtons and that sir is just plain wrong. You again get a zero of your physics test.
5. Tirdun
Is something you've either made up or have mis-stated. There is no delta mm=Newtons because it's an impossible calculation to make. Change in distance doesn't automatically produce force, so you are missing something. You are either attempting to measure tensile strength, some electromagnetic property or the basics of spring physics. If it is the latter you're looking for Hooke's Law, and you've written it wrong.
6. Belz
How can you have an equation of a distance and a force ????
How is that science ?
7. Mortfud
How about you just tell us what you think that "equation" is?
There are some pretty sharp folks on this forum, and the best answers we can get 1)Mangled version of Hooks Law 2) Unintelligible gibberish.
8. Spitfire
You can't directly equate length and force, so this doesn't work (that's the purpose of the spring constant). Also, it implies that the force doesn't change no matter how far the spring is stretched, which is easily disproved with a simple experiment.
Possible reading 2:
x = F
where
x is the elongation of the spring in mm
F is a force in Newtons
This doesn't work because you can't directly compare length and force.
Unimpressive all round. We're talking about calibrating a spring balance. Something 10 yrs old schoolkids do.