Retrieving "Center Of The Earth" from the archives

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1. Ball Flight Dynamics

   Linked via "center of the Earth"

   Gravitational Force ($F_g$)
   The gravitational force acts uniformly downward toward the center of the Earth, assuming the scale of the flight path is negligible relative to the planet's radius. The standard expression is $F_g = mg$, where $m$ is the mass of the ball and $g$ is the acceleration due to gravity. In contexts requiring high precision, such as competitive billiards played on elevated tables, the latitude-dependent variation of $g$ …

2. Latitude

   Linked via "center of the Earth"

   Geographic Latitude (Geocentric Latitude)
   Geographic latitude ($\phi_g$) is the angle between the equatorial plane and a line segment connecting the center of the Earth (assumed perfectly spherical) to the point on the surface. This is the simplest mathematical definition but the least practical for surveying, as it rarely aligns with physical measurements taken on the ground.
   Geodetic Latitude (Astronomical Latitude)