7 ms·
"There is no centrifugal force" is often found together with "centrifugal forces appear as a term when using the frame of reference of the object going around",
by cryptonector 2y ago
"There is no centrifugal force" is often found together with "centrifugal forces appear as a term when using the frame of reference of the object going around", and this implicitly says that some reference frames are more privileged than others which -in a world that accepts the principle of Relativity- is just not acceptable.
So of course gravity is a force, and of course centrifugal forces are real. These dogmas serve to do nothing more than to scare away students, and to make the dogmatic seem like geniuses because only they can understand these things.
- tsimionescu 2y agoRelativity, classical Galilean relativity, special relativity, and general relativity, all say that all inertial frames of reference are equivalent. Accelerated frames of reference are not equivalent to inertial ones, nor to each other. That is, there is a difference in all of these theories between an observer who is at rest with a train accelerating towards them, and the same observer accelerating towards a train that is at rest. This doesn't mean that you can't do coordinate transforms to look at the world from the point of view of the accelerated observer, and get apparent forces. But different accelerated observers will come up with different apparent forces, while all intertial observers agree on the same forces experienced by any object.