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We know that the drag force on an object is defined as:

F

, where ρ is the density of the fluid the object is travelling in, v is the velocity of the object, C

Rearranging the formula to find drag coefficient, we have:

C

But suppose we needed to find the drag coefficient of an object in order to find the drag force on the object; in other words, let's say we didn't have any data on both drag coefficient and drag force. How would one find drag coefficient without using the above formula?

I heard that another way to find it was:

C

, where θ is the angle of attack of the object in radians.

What I don't like about this formula is the "≈" sign, and so I avoid using it completely.

Is there another formula to find the drag coefficient of an object?

Thank you.

F

_{D}= ρ*v^{2}*C_{D}*A/2, where ρ is the density of the fluid the object is travelling in, v is the velocity of the object, C

_{D}is the drag coefficient of the object and A is the surface area of the object.Rearranging the formula to find drag coefficient, we have:

C

_{D}= (2*F_{D})/(ρ*v^{2}*A)But suppose we needed to find the drag coefficient of an object in order to find the drag force on the object; in other words, let's say we didn't have any data on both drag coefficient and drag force. How would one find drag coefficient without using the above formula?

I heard that another way to find it was:

C

_{D}≈ 0.01*θ, where θ is the angle of attack of the object in radians.

What I don't like about this formula is the "≈" sign, and so I avoid using it completely.

Is there another formula to find the drag coefficient of an object?

Thank you.

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