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Escape Speed

Show that escape speed is the square root of 2 times as large as the orbital speed of an object in orbit just above the earth's surface.

Solution Preview

Let Vo be the orbital speed and Ve be the Escape speed.
For the body to orbit the earth, the centrifugal force must balance it's weight. :et it orbit at a distance of one Earth radius Re.

m*Vo^2/Re = ...

Solution Summary

This solution includes formulas and calculations, including Kepler's second law.