Luigi Fortunati
2023-03-06 06:02:45 UTC
The "apparent" force exists in the accelerated frame but does not exist
in the inertial frame.
For example, in the case of the slingshot, the (apparent) centrifugal
force exists in the rotating frame.
Does this mean that (in the rotating reference) there really is a
centrifugal force acting on the stone or do we imagine that there is
but, in reality, it isn't there at all?
Obviously, in the second case, no one would ever think of asking to
which fundamental force it belongs but, in the first case, if a force
really acts on the stone, we should be able to establish what kind of
force it is.
Well, is the apparent centrifugal force that really acts on the stone
during the rotation and in the rotating reference part of one of the 4
fundamental forces?
[[Mod. note -- No. The apparent centrifugal force is an artifact of
working in non-inertial (in this case rotating) coordinates. -- jt]]
in the inertial frame.
For example, in the case of the slingshot, the (apparent) centrifugal
force exists in the rotating frame.
Does this mean that (in the rotating reference) there really is a
centrifugal force acting on the stone or do we imagine that there is
but, in reality, it isn't there at all?
Obviously, in the second case, no one would ever think of asking to
which fundamental force it belongs but, in the first case, if a force
really acts on the stone, we should be able to establish what kind of
force it is.
Well, is the apparent centrifugal force that really acts on the stone
during the rotation and in the rotating reference part of one of the 4
fundamental forces?
[[Mod. note -- No. The apparent centrifugal force is an artifact of
working in non-inertial (in this case rotating) coordinates. -- jt]]