Pond Boss Forums GENERAL QUESTIONS Pond Boss Amazing Story of man sucked through drain.

http://www.koco.com/news/13992895/detail.html I watched the video and don't really see how a man his size fit through a 12" pipe.

Dang, Okies are tough. I don't understand. His shoulders are more than 12 inches wide.

"Kennon said he thought about his girlfriend, her son, his favorite players on the Oklahoma Sooners football team and his father, who a summer ago had been diagnosed with Stage 4 terminal cancer."

1.girlfriend

2.her son

3.favorite football players

4.terminally ill father

Is it just me or is there something funny about his list?

No, they're all loved ones. They were Sooners players, after all.

Newton's second law: law of acceleration

Lex II: Mutationem motus proportionalem esse vi motrici impressae, et fieri secundum lineam rectam qua vis illa imprimitur.

The rate of change of momentum of a body is proportional to the resultant force acting on the body and is in the same direction.

In Motte's 1729 translation (from Newton's Latin), the Second Law of Motion reads:

LAW II: The alteration of motion is ever proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed. — If a force generates a motion, a double force will generate double the motion, a triple force triple the motion, whether that force be impressed altogether and at once, or gradually and successively. And this motion (being always directed the same way with the generating force), if the body moved before, is added to or subtracted from the former motion, according as they directly conspire with or are directly contrary to each other; or obliquely joined, when they are oblique, so as to produce a new motion compounded from the determination of both.

The product of the mass and velocity is the momentum of the object (which Newton himself called "quantity of motion"). The use of algebraic expressions became popular during the 18th Century, after Newton's death, while vector notation dates to the late 19th Century. The Principia expresses mathematical theorems in words and consistently uses geometrical rather than algebraic proofs.

A verbal equivalent of this is "the acceleration of an object is proportional to the force applied, and inversely proportional to the mass of the object". If m is dependent on velocity (and thus indirectly upon time) as we now know it is (for high velocities—see special relativity), then m has to be included in the derivative, as above.

Note that force will depend on speed of the moving body, acceleration and its rest mass. However, when the speed of the moving body is much lower than the speed of light, the equation that was shown above will be reduced .

Contrary to what is sometime claimed in elementary texts, mass must always be taken as constant in classical mechanics. So-called variable mass systems like a rocket can not be directly treated by making mass a function of time in the second law. The reasoning, given in An Introduction to Mechanics by Kleppner and Kolenkow and other modern texts, is excerpted here:

Newton's second law applies fundamentally to particles. In classical mechanics, particles by definition have constant mass. In case of well-defined systems of particles, Newton's law can be extended by integrating over all the particles in the system. In this case we have to refer all vectors to the center of mass. Applying the second law to extended objects implicitly assumes the object to be a well-defined collection of particles. However, 'variable mass' systems like a rocket or a leaking bucket do not consist of a set number of particles. They are not well-defined systems. Therefore Newton's second law can not be applied to them directly. The naive application of F = dp/dt will usually result in wrong answers in such cases. However, applying the conservation of momentum to a complete system (such as rocket+fuel, or bucket+leaked water) will give unambiguously correct answers.

Plus ca change, plus ce la meme chose

If my father weren't feeling well, I would contemplate his situation way before I'd think about my favoriate ex-Sooners....

Oh yeah, I don't have any favorite ex-Sooners.

Eric. Huh?

easily explained....
folded under pressure

No Brettski, this guy was actually the one kid actor from the original Willy Wonka and the Chocolate Factory who got sucked up into the clear pipe. He's been getting sucked into culverts & piping ever since.

Type-casting for child actors is a sad thing.

Dave --Net force equals mass times acceleration. Theo is right he folded up. If he did not he would have been crushed.

STAY AWAY FROM SIPHONS WHEN IN USE !!! IF THAT HAD BEEN AN 8IN HE WOULD BE DEAD . EVEN A 3 IN CAN CAUSE SERIOUS INJURY OR DEATH. THERE IS A LOT OF FORCE VIA MASS OF PERSON AND WATER AND A WHOLE LOT OF ACCELERATION.

Lemee see. If I could get a 24 inch pipe and hustle up some rain, I could sell tickets to the ride.

DD1, I would prefer a pipe more like the one in the story. I want to know how a bullet feels.

I can guarentee you there would be NO way any force could fit my Large but muscular body through a 12 inch pipe!!!! I would be like the typical raccoon in the drain pipe that you find the next spring!!!

Upstate NY man tests theory of "net force equals mass times acceleration" with family pet; PETA sabres rattle
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What are you trying to tell us, _dup1?

All I can say is there would never be anyway you could get my body through a 12 inch pipe no matter how high the pressure is!