Please help - magnus force and drag force equations

[pikula]

Hello everyone, i have a question, please help me with equations for magnus force and drag force...i have found an equations for drag force it's, Fd=1/2 * density * v2 * A * Cd .

but i can't find equation for magnus force...can anyone tell where i can find it, or if somebody know, let me know :) i am seeking for an equation of magnus force that have coefficient also (like Cd in drag force equation)...

thanks !

i need that for a task with ball on which drag and magnus force are acting

 

[pikula]

anybody? :(