Is the Magnus Force Equation Related to the Drag Coefficient?

AI Thread Summary
The Magnus force equation, Fm = S(w x v), involves the air resistance coefficient S, while the drag coefficient is defined as Cd = (2Fd)/[(p)(v^2)(A)]. The discussion questions whether Cd can be substituted for S, suggesting they might be equivalent. However, it is clarified that they cannot be the same due to differing units. Understanding the distinctions between these coefficients is crucial for accurate applications in fluid dynamics.
Chemical Bros
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Hey everyone,

I was researching the magnus force and came upon the equation being:

Fm= S(w x v)

where S is the air resistance coefficient and (w x v) is the cross product of the angular velocity and the velocity of the object.

Well my question is that if the drag coefficient is:

Cd= (2Fd)/[(p)(v^2)(A)]

then couldn't you just sub in Cd for S? I'm assuming they are the same thing...Thanks
 
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Can't be the same, since for one thing they don't have the same units.
 
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