## Essential University Physics: Volume 1 (3rd Edition)

$137.03 \ m/s$
We know that the y-forces cancel out, for the height of the plane is constant throughout the bank. Thus, we find: $mg = F_n cos\theta$ We know that the x-component of the normal force due to the air is the centripetal force, so we find: $F_nsin\theta=\frac{mv^2}{r}$ Combining these equations gives: $mg = \frac{mv^2}{rtan\theta}$ This means that the velocity is: $v=\sqrt{grtan\theta}=\sqrt{(9.81)(3600)(tan28)}=137.03 \ m/s$