Surface Gravity

Surface Gravity Defined Surface Gravity is a measure of how strong gravity is on the surface of a Celestial object That is: how much one kilogram weighs It is also the acceleration of an object falling on the surface of that Celestial object. On Earth it is about 9.8 m/s² or 32.2 ft/s² By comparing a planet’s surface gravity to Earth’s you get an idea of the weight of something there. Example: On a planet with a surface gravity of 19.6 m/s² things would weigh twice what they do on Earth

How to find Surface Gravity A formula for surface gravity can be easily derived from Newton’s Second Law of Motion and the Universal Law of Gravity (Please copy derivation and formula)

Surface Gravity compared to Earth To compare to Earth divide by 9.8, This will give you its gravity relative to Earth’s in “g’s” Example: Surface gravity is 4.9 m/s² on Planet Snarf That is 4.9/9.8 = .5 g’s On Snarf things weigh half as much!