Recent content by lebronJames24

neither do I

I'll see what I can do in the coming days to attempt to reproduce this. The reduced height was not measured but visible. Additionally, the ones attempting to return it had a tougher time returning it. I know it may seem unbelievable, but I am not making this up.

About a year ago, I was playing tennis against family and managed to have a strange service. Since I am not good at serving, I often lean forward from the service line while still keeping my feet behind. What resulted was the tennis ball having a normal trajectory before it bounced with a...

Ok so far, from my understanding, during the transitionary period from laminar to turbulent flow, an object is in drag crisis. For my application, I am attempting to understand this phenomena for a knuckleball in soccer. I am trying to understand what properties of fluids are responsible for...

let me see if get the idea. pressure equals force/area. since both of the areas of half of the ball is the same, that coefficient remains constant. however, since more drags force is necessary for the ball to be in equilibrium position (not spinning) for the side that goes against the air flow...

also what side is designated as u1 and which u2?

they do not define what p equals. and also if there are only two objects in the system, those being the ball and the air, then why do we need two u's? shouldnt there only be one surface?

im just trying to understand why the force point in the lower pressure direction

also why do some shapes display the magnus force while others do not?

Ok I need to clear up a few things. First, in (Figure 1), a soccer ball (the circle in the photo), would have the magnus force towards the lower pressure because the universe favors high entropy? Also what are the forces are active in figure 2? Lastly what to the variables in Figure 3 mean...