The direction of movement of an object moving on the Earth’s or a sphere’s surface

  • Saturday, January 2nd, 2016

The Earth is an oblate spheroid rather than a perfect sphere due to the equatorial bulge because of Earth’s rotation around its axis. The Earth’s terrain varies greatly but on a global scale the deviations in local topography are small compared to the Earth’s radius. If we consider the Earth as a smooth sphere, as it appears from the space, ignoring the ups and downs of the terrain, what would the vertical direction of movement of an object moving on the Earth’s surface be – upwards, downwards or both?

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© Dr Sudipta Paul, themedideas.com, 2016

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