Centrifugal force (rotating reference frame): Difference between revisions

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If these action and reaction forces are equal and opposite, why does the centripetal action force have its way as the cause of inward-directed acceleration? The answer is as straightforward as recognizing that the centrifugal force, as a true reaction force, is caused by and provides the LAW III predicted support for the event-causing centripetal action force. Thus it is not logical to expect the centrifugal reaction force to do anything more than provide support for the centripetal action force that represents its cause.

The same may be said about the acceleration/Action and acceleration/Reaction forces present in an event involving linear acceleration. In your car, you would not expect the forward-directed acceleration/Action force from the seat against your torso to be canceled by the equal and opposite rearward-directed acceleration/Reaction force from your torso against the seat. The a/R force from your torso is caused by and provides equal and opposite support for the a/A force from the seat while serving in no manner to reduce or cancel the event's acceleration.

The centrifugal reaction force present in circular events is often said to be "fictitious" or unreal. Our scale tells us otherwise. This popular confusion is based upon a general misunderstanding of the supporting role of a true reaction force which can never act as the cause of any event. Thus a centrifugal reaction force is always an outward directed force that is present in an event where the action of acceleration is always inward directed.

Ethan Skyler

See also: Coriolis force, centrifugation

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+'''    If these action and reaction forces are equal and opposite, why does the centripetal action force have its way as the cause of inward-directed acceleration?  The answer is as straightforward as recognizing that the centrifugal force, as a true reaction force, is caused by and provides the LAW III predicted support for the event-causing centripetal action force.  Thus it is not logical to expect the centrifugal reaction force to do anything more than provide support for the centripetal action force that represents its cause.
-'''Centrifugal force''' is actually not a force but the experience of an [[inertia]]l force experienced in a [[rotation|rotating]] [[reference frame]] acting away from the center of the rotation. It is equal in [[magnitude]] but opposite to the [[centripetal force]] required to constrain the body to move in a circular [[motion]].
+The same may be said about the acceleration/Action and acceleration/Reaction forces present in an event involving linear acceleration.  In your car, you would not expect the forward-directed acceleration/Action force from the seat against your torso to be canceled by the equal and opposite rearward-directed acceleration/Reaction force from your torso against the seat.  The a/R force from your torso is caused by and provides equal and opposite support for the a/A force from the seat while serving in no manner to reduce or cancel the event's acceleration.
-[[Velocity]] is a [[vector (spatial)|vector]] quantity; that is, it has magnitude ([[speed]]) and [[direction]]. If a body is travelling at a certain speed and in a certain direction undisturbed it has constant velocity. Thus if a body is travelling at a constant speed in a [[circle]], its velocity is constantly changing.
+The centrifugal reaction force present in circular events is often said to be "fictitious" or unreal.  Our scale tells us otherwise.  This popular confusion is based upon a general misunderstanding of the supporting role of a true reaction force which can never act as the cause of any event.  Thus a centrifugal reaction force is always an outward directed force that is present in an event where the action of acceleration is always inward directed.
-We know from [[Newton's laws of motion |Newton's first law]] that a body will retain its velocity unless another force acts upon it. Thus when a body travels in a circle a force must be applied to stop it from travelling in a straight line. This force is the [[centripetal force]], the only force necessary for a [[circular motion]].  What is interpreted sometimes as a centrifugal force is the tendency of the object to follow in a straight line, which would bring it outside of its circular trajectory.
+Ethan Skyler
-Physics teachers are keen to teach that the real force is Centripetal force and that centifugal force is the reactionary force which balances it. Conversion of [[angular momentum]] into linear momentum is used in a number of ways, the most obvious is perhaps a [[slingshot]].