Coriolis force also arise in the case of radial motion toward or away from the axis of rotation. The existence of such a force can be deduced from the
{"Image DocumentName": "Coriolis force also arise in the case of radial motion toward or away from the axis of rotation. The existence of such a force can be deduced from the conservation of angular momentum.", "Image ImageDescription": "Coriolis force, which acts perpendicular to the velocity vector, can only change the direction of travel and not the magnitude. The mathematical form for the Coriolis force due to motion relative to the rotating earth can be obtained by considering the motion of a hypothetical particle of unit mass which is free to move on a frictionless horizontal surface on the rotating earth. If the particle is initially at rest with respect to the earth, then the only forces acting on it are the gravitational force and the apparent centrifugal force due to the rotation of the earth. The sum of these two forces defines the gravity, which is directed perpendicular to the local horizontal. If the particle is now set in motion in the eastward direction by an impulsive force, the centrifugal force on the particle will be increased since the particle is now rotating faster than the earth.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}