Recent content by federiconitidi

correct, this tought being based on the fact that in any moment in time, the mass has a linear velocity equal to the orbital speed, so enough to "orbit" the fact that the object also rotates around a vertical axis should not change anything I understand this is weird, however I have troubles...

Apologies I haven't been clear enough - please find a sketch which should explain better my question

yes I consider rotation about the axis (say the axis is vertical) The point I'm trying to make here is different. we say that the 8000m/sec is the linear velocity of a mass required to balance out the gravity force applied to it (orbital speed) a mass rotating about a vertical axis at 1m and...

That is the orbital speed near the Earth surface (where mv^2/r-mg=0) http://hyperphysics.phy-astr.gsu.edu/hbase/orbv3.html#ov

It is known that 8000m/sec is the speed required for an object traveling parallel to the Earth's surface to orbit (i.e. so that the centripetal force counteracts the gravity force). I am now thinking to an object linked to an axis of rotation (e.g. with a 1m string) and rotating about that axis...