4 ms·
attracts -as if- all its mass is concentrated at its center That's only 100% true for a radius _outside_ of the object. At a radius _inside_ the object, only
by al2o3cr 4y ago
attracts -as if- all its mass is concentrated at its center
That's only 100% true for a radius _outside_ of the object.
At a radius _inside_ the object, only the mass closer to the origin counts so the "effective" mass of the object drops smoothly to zero.
- sliken 4y agoActually it's something like 2 radius, unlike the earth there's no stable orbits under 1.5 or 2 radii (I forget which). Outside of 2 radii there's no differences.