Re: Newton's Gravity

Luigi Fortunati <fortunati.luigi@gmail.com> schrieb:

The consequence of all this is that the gravitational force of the
larger body of mass M acts on the entire mass <m> of the smaller body
and this justifies the product m*M of Newton's formula, which
corresponds to the force exerted by the larger mass M on the entire
mass <m>.
>
Instead, the gravitational force of the smaller body of mass <m> cannot
act on the entire body of mass M because M is larger

That is a non sequitur if there ever was one.  Why should this be the
case?

Think of a mass M as being divided into i smaller submasses (all
with the same mass m_part) and of a mass j of being divided into
m smaller submasses with the same mass m_part. Which submass of M
should not interact all submasses of j?