- #1
hasnoidea
- 6
- 0
Hi forum,
This is my first post on this site, so please go easy on me :D
I'm a year 12 physics student doing an investigation.
We are given the freedom of choosing any field of physics to investigate.
I don't know what came over me as I chose a field I have never came across before: Fluid mechanics. Just the very simple aspects of fluids, but I am not sure where I stand in this uncharted field. So any help would be appreciated :D
My investigation involves me dropping a marble into a tall measuring cylinder filled with different types of oils and recording the marble's terminal velocity in each drop.
Initially, I have selected to investigate the relationship of Velocity and the Viscosity of each liquid. Hypothesising that the higher the viscosity, the lower the terminal velocity.
But the I found this thing called Stokes Law, it looks something like this...
Velocity = 2/9 * (density of object - density of fluid)/dynamic viscosity * acceleration due to gravity * radius of object squared
I noticed that the equation consists of both the density and viscosity, and density and viscosity is not related and is different for each each liquid (to my knowledge)
So now I cannot draw a relationship between the velocity and viscosity anymore, because following the equation, density will affect it.
I just want to know if I'm in the right track or if I have been derailed and am heading for a cliff...
I'd also like to know what I should do in regards to drawing some sort of relationship between the descent velocity and...SOMETHING!
Thanks for any help! :D
This is my first post on this site, so please go easy on me :D
I'm a year 12 physics student doing an investigation.
We are given the freedom of choosing any field of physics to investigate.
I don't know what came over me as I chose a field I have never came across before: Fluid mechanics. Just the very simple aspects of fluids, but I am not sure where I stand in this uncharted field. So any help would be appreciated :D
My investigation involves me dropping a marble into a tall measuring cylinder filled with different types of oils and recording the marble's terminal velocity in each drop.
Initially, I have selected to investigate the relationship of Velocity and the Viscosity of each liquid. Hypothesising that the higher the viscosity, the lower the terminal velocity.
But the I found this thing called Stokes Law, it looks something like this...
Velocity = 2/9 * (density of object - density of fluid)/dynamic viscosity * acceleration due to gravity * radius of object squared
I noticed that the equation consists of both the density and viscosity, and density and viscosity is not related and is different for each each liquid (to my knowledge)
So now I cannot draw a relationship between the velocity and viscosity anymore, because following the equation, density will affect it.
I just want to know if I'm in the right track or if I have been derailed and am heading for a cliff...
I'd also like to know what I should do in regards to drawing some sort of relationship between the descent velocity and...SOMETHING!
Thanks for any help! :D