How to explain there cannot be a case where r=0 in F=G(Mm/r^2)

rock.freak667

The gravitational force of attraction between two point masses, M & m₂, separated by a distance 'r' is given by:

F= GMm/r²

If r=0, then you don't have two masses anymore but one mass. In which cases, gravity would vary with depth of the planet. Read more here.

rock.freak667 Recognitions: Homework Help	The gravitational force of attraction between two point masses, M & m₂, separated by a distance 'r' is given by: F= GMm/r² If r=0, then you don't have two masses anymore but one mass. In which cases, gravity would vary with depth of the planet. Read more here.