Sujet : Re: The rope
De : pglpm (at) *nospam* duralexnonlex.org (pglpm)
Groupes : sci.physics.researchDate : 25. May 2025, 23:39:45
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <100sm3v$odmu$1@dont-email.me>
References : 1 2
On 250523 23:37, Luigi Fortunati wrote:
In any case, this is all your interpretation and not that of Newton who
writes: "[the rope] will impede the progress of the stone as much as it
will promote the progress of the horse".
Newton is implicitly assuming a massless rope; this was a common assumption
then (see e.g. Dugas, "A history of mechanics"), just as it is today, in
this kind of problems. For a massless rope his statement is true, since the
gravitational force on the rope is then zero.