Lecture 16 The Coriolis Force(1)

# L l 24 because the centrifugal force generated due to

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Unformatted text preview: of rotaWon φ = laWtude ω has two components, a verWcal and a horizontal one. Velocity is composed of the original velocity “v” as well as the component of velocity due to the rotaWng frame of reference. 19 To an observer in an inerWal frame, absolute velocity is deﬁned as: (m s- 1 ) Centrifugal acceleraWon Change in velocity relaWve to ﬁxed Earth Coriolis acceleraWon Coriolis Force 20 •  So the higher the laWtude the greater the force •  The faster the velocity the greater the force •  Force proporWonal to mass (as usual) 3 Golden Rules of Coriolis Force 21 As viewed from the direcWon of original moWon 1)  ༉  ༉  Northern Hemisphere: deﬂecWons towards right Southern Hemisphere: deﬂecWons towards le< 2)  Faster an object moves, greater the deﬂecWon 3)  Tendency to deﬂect is max at poles, zero at equator ༉  Cross product of angular velocity and local velocity vector [source 1] 22 Why Does it MaCer? l༆  Hurricanes l༆...
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