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**An airplane is flying in a horizontal circle at a speed of 470 km/h (Figure 6-39). If its wings are tilted 40° to the horizontal, what is the radius of the circle in which the plane is flying? Assume that the required force is provided entirely by an "aerodynamic lift" that is perpendicular to the wing surface.**

m

m

**2. F=mv^2/r**

**I first tried setting F to mgsin40 and solving for r (thinking the m would cancel from both sides of the equation), but that didn't seem to work. So I'm kind of at a standstill not knowing where to go with this problem**