This is the formula for a thick vertically faulted slab with such a large throw that the downthrow side makes no contribution to the gravitational force .
Landing safely on Mars is said to be one of the most challenging parts of any mission, even though the planet's gravitational pull is only about a third of that of Earth's.
The undulating waves of the open sea are generated by three natural causes: wind, earth movements or tremors, and the gravitational pull of the moon and the sun.