How is the angle of dip affected while going from a place where the acceleration due to gravity is maximum to a place where the acceleration due to gravity is low?
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Outward centrifugal force caused due to rotation of earth affects (decreases) the acceleration due to gravity. The change varies with the latitude.
Let us consider the earth to be a spherical ball of mass ‘M’ and radius ‘R’. An object of mass ‘m’ is at point P at latitude φ, when the earth is not rotating the weight of the object is mg. But earth is rotating with angular velocity. So, the object is moving in a circular path of radius ‘r’ as shown in the figure. The object experiences centrifugal force.
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