4 ms·
There are some "real" physical force that do not depend on the reference frame and are caused by some law of nature. And there are pseudo-forces that are just a
by jenadine 4y ago
There are some "real" physical force that do not depend on the reference frame and are caused by some law of nature. And there are pseudo-forces that are just a mathematical artifact of a non inertial référence frame.
Gravity is a pseudo force.
https://en.wikipedia.org/wiki/Fictitious_force https://en.wikipedia.org/wiki/Fictitious_force
- kazinator 4y agoNon-intertial-reference forces can be traced to real forces if we change the reference frame. In an accelerating car, the seat really is pushing on your back. This is readily evident from the stationary reference frame. You're being accelerated and so there is a F = ma there. Centrifugal force is pseudo, but centripetal acceleration isn't. In what reference frame can we properly understand gravitational attraction, if the obvious one is fictional?
- jenadine 4y agoThe seat is pushing me in the car and the earth is pushing my feet when I stand up on it. The frame of reference is the curved 4 dimensions space-time https://en.m.wikipedia.org/wiki/Minkowski_space https://en.m.wikipedia.org/wiki/Minkowski_space
- deleted 3y ago[deleted]