Soyuz
Reputation
Top tag
Next privilege 250 Rep.
 Apr 2 comment Hydrostatic pressure at lateral directions Ah I think I get it now -- "the same pressure distribution" leading to "the same total force resulting from hydrostatic pressure" is a result of pressure itself not being a vector, but being a scalar quantity. Apr 2 comment Hydrostatic pressure at lateral directions From the first link, "The sides are identical in area, and have the same depth distribution, therefore they also have the same pressure distribution, and consequently the same total force resulting from hydrostatic pressure, exerted perpendicular to the plane of the surface of each side." Can you care to elaborate on this? I still do not really understand why the pressure acting on the top face must be equal to the pressure acting on the side, directly below the top face. Mar 26 comment Vector Addition — Direction @MichaelBrown, I think I've sorted it out. I think this all arose from a misunderstanding from a physics book thing. Must've been a typo. Thanks though! Mar 26 comment Vector Addition — Direction Mar 26 comment Vector Addition — Direction So if I wanted to describe a system of forces and wrote $F_1$ + $F_2$ = $F_3$, $F_3$ is in the opposite direction as $F_1$? But then what about $\Sigma F = ma$? with subtraction we'd say they have opposite directions, but then, they don't right? Mar 26 comment Vector Addition — Direction @Debangshu, yes but say $F_1$ and $F_2$ have the same direction and magnitude, and $F_3$ had double their magnitude, and in the opposite direction. $(1)$ would hold, and by subtraction $(2)$ seems to be logically correct. But then $(3)$ would also be true based on what I said about $(1)$, which seems to confuse me. Mar 26 comment Vector Addition — Direction @Debangshu, I'm aware of that, but what of the case where $F1$ and $F2$ are of the same direction? $(1)$ still holds, no? Mar 26 comment Vector Addition — Direction @MichaelBrown I don't know, if two vectors have the same direction and magnitude, should they not equate? Oct 14 comment Surface Tension of a Liquid - When a liquid body is acclerating I was thinking about the distance between the individual molecules, which would affect then tension forces? Oct 9 comment Jupiter: Zonal Jets in opposite directions I don't know, haha. I mean, since the atmosphere of Jupiter (as we know it today) was formed, shouldn't the "rogue" jets be "conquered" by those of greater number and magnitude?