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Hello.
i have 2 confusions in the fluid dynamics, please help.
1. i knw all the forces on a ball moving downwards through a fluid, but what are the forces on the ball if it moves up through the fluid?
2. For calculating the Velocity for the ball falling/going up the fluid which formula should we use, there are 2 to use.
* v= 2*r^2*g (Ps-Pf)/9*viscosity
or
* v= F/6*pie(viscosity*radius)
i have 2 confusions in the fluid dynamics, please help.
1. i knw all the forces on a ball moving downwards through a fluid, but what are the forces on the ball if it moves up through the fluid?
2. For calculating the Velocity for the ball falling/going up the fluid which formula should we use, there are 2 to use.
* v= 2*r^2*g (Ps-Pf)/9*viscosity
or
* v= F/6*pie(viscosity*radius)