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Started by trout_boyII, December 17, 2008, 08:27:43 AM
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Quote from: wvyou on December 19, 2008, 14:10:26 PMAfter a close call on the Raven Fork last weekend, I'm taking the better safe than sorry approach. If you don't drown, plan on the water temps killing you.
Quote from: troutphisher on December 17, 2008, 09:40:39 AMDeuce, Another trick you can employ, is to only stand on one foot. This decreases the surface area on witch the force of the water can act upon. It's like cheating physics!A simple calculation shows that P is a product of F/A, so by reducing A, you also reduce P.P= Pressure F=Force A= Area
Quote from: troutphisher on February 02, 2009, 19:25:19 PMLOL....you missed the jest of it.But since you brought pressure, I think you misunderstood. The pressure you are referring to, is a result of the persons weight. That weight in-turn acts upon the surface area of the person shoe print or sole size, as is not necessarily an even distribution. It also greatly depends on the surface of the sole, what is the coefficient of friction, since it is friction and pressure holding the foot firm. Another way to look at this as an example would be to study the fiction between a hard rubber sole and the felt sole. Felt has the ability to grip based on the long fibers of the felt and rubber has a much smoother surface, resulting in lower coefficient, thus would slip more if a force acting on it was perpendicular to the friction surface.Pressure is a result of force, and the unit in this case is area. If the person wading had fat chubby legs, it is entirely possible, that the surface area and resulting force, would overcome the friction and pressure of the sole resting on freestone rocks. And it that case, reducing the surface area subjected to the force, in this case water flowing against the leg area, one could reduce the resulting pressure, by reducing the exposed area.It is a balancing or equilibrium of these pressures, based on coefficient of friction, water flow in cfs, and weather your a fucking fat ass or not, that determines weather you are stand against the force on one leg, or take a drink.of course assuming the force vectors are perpendicular witch results in higher values.