lewm
06-29-2016 3:43am
"With an unsuspended mass-loaded turntable of any kind, that centrifugal force is absorbed and thus resisted by the mass of the supporting structure." I don’t want to say "I told you so", but I did tell you so back when that was a point of contention among us. Back when Raul was recommending just sitting the naked chassis on a set of AT pucks that were said to have magic powers. And let me apologize in advance for being pedantic, but this is not a "centrifugal" force at all. This is a force that is described in Newton’s Third Law of Motion: "for every action, there is an equal and opposite reaction". Thus it is a force vector that has a direction described by an arc opposite to the direction of the arc of turntable rotation. This is why and how the Kronos works; the lower platter, of mass equal to the working platter, is rotating opposite to the direction of the working platter. and this effectively cancels the forces. Otherwise, the tail wags the dog.
And finally, to be even more annoying, there is no such thing as a "centrifugal" force. The force described in that commonly used misnomer is actually centripetal; to keep the object from flying off in a straight line, a force directed toward (not away from or "centrifugal") the center of rotation is generated and required.
Lewm,
You are wrong when you say there is no such thing as centrifugal force.
Centripetal force is that at a right angle directed toward the centre of the axis of rotation.
Centrifugal force is the apparent force, equal and opposite to the centripetal force, drawing a rotating body away from the center of rotation, caused by the inertia of the body.
Centrifugal and centripetal are opposite sides of the same coin.
If you look at the platter from the outside you see centripetal force, if you sit on the platter you feel centrifugal force - get it.
Newton’s First Law states that “A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force.” If a massive body is moving through space in a straight line, its inertia will cause it to continue in a straight line unless an outside force causes it to speed up, slow down or change direction. In order for it to follow a circular path without changing speed, a continuous centripetal force must be continuously applied at a right angle to its path.
