GRavity ..

the_monkey

Hi,
read somewhere that Saturn has less gravity then on earth ? despite having much more mass ... is this because on the surface the distance is greater (inversely proportional to the square of the dist) - Fg = G*m1*m2/d*d

Where m1 = mass of object on planet surface
m2 = mass of planet.

d= distance between them (in this case the radius of the planet)

So if Saturn is really sparse (even though has a huge mass) the acceleration
of gravity will be less?
then again, that above formula is not for g (accel.) it's for Fg ....

how do you calculate g (accel.) ?

thanks

ozmo

the_monkey wrote: »

Hi,
read somewhere that Saturn has less gravity then on earth ? despite having much more mass ... is this because on the surface the distance is greater (inversely proportional to the square of the dist) - Fg = G*m1*m2/d*d

Where m1 = mass of object on planet surface
m2 = mass of planet.

d= distance between them (in this case the radius of the planet)

So if Saturn is really sparse (even though has a huge mass) the acceleration
of gravity will be less?
then again, that above formula is not for g (accel.) it's for Fg ....

how do you calculate g (accel.) ?

thanks

hmm- this page says also what you are saying:

http://www.gravitycalc.com/Saturn
If you could walk on Saturn due to that mass being spread across the entire volume of Saturn, the actual gravity pulling at any spot on the surface is only 91% of Earth’s gravity


But google itself says its higher gravity than earth
Best guess for Saturn Gravity is 10.44 m/s²
https://www.google.ie/search?q=Saturn+gravity

and this site says similar
http://www.gravitycalc.com/Saturn
g=1.139 times earth