tag:blogger.com,1999:blog-14371726.post7082669464679101875..comments2023-04-17T07:26:06.116-05:00Comments on Gratia Super Naturam: Questions on Inertial MotionVincentiushttp://www.blogger.com/profile/04622010447899090511noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-14371726.post-63691557168964069842008-09-16T12:53:00.000-05:002008-09-16T12:53:00.000-05:00Thank you both for your comments! DW, it is good t...Thank you both for your comments! DW, it is good to have you on board!<BR/><BR/>I will respond to NI first, because his raises a difficulty with the conception of the question put forward.<BR/>I would first of all say that when I used the term “medium” I had conceived of it in the most general way possible, such that it would include even the surface on which the sphere is rolling (I am avoiding Frater Asinushttps://www.blogger.com/profile/00220115052492563584noreply@blogger.comtag:blogger.com,1999:blog-14371726.post-16955898962309897502008-09-15T15:32:00.000-05:002008-09-15T15:32:00.000-05:00Frater, I wonder what you might mean when you say ...Frater, I wonder what you might mean when you say that it is a <I>necessary condition of motion that it be through a medium</I>. It seems that, at least in the account of the sphere on the plane, that the surrounding medium of the air does not enter the account of the motion of the sphere, unless perhaps as the mover. The resistance of the air in the example Dawnwatchman gave is similar to the TheAdunkelhttps://www.blogger.com/profile/02075203614552707330noreply@blogger.comtag:blogger.com,1999:blog-14371726.post-1262905189351136152008-09-14T16:07:00.000-05:002008-09-14T16:07:00.000-05:00Frater Asinus wrote: "First of all, can there be m...Frater Asinus wrote: "First of all, can there be motion without 'friction?'"<BR/><BR/>This reminds me of a comment one of our tutors ("author" of the <I>Physics,</I>) said concerning motion and inertia. He said something to the effect of, just because with less resistance you can move more freely, does not mean that with no resistance you can move perfectly freely. A bird in a vacuum couldn't flyJohn B.https://www.blogger.com/profile/12263867557448283280noreply@blogger.com