🎬the fictitious forces that arise in non-inertial frames of reference

The animation clearly shows that the path of the particle is entirely dependent on the observer's reference frame. An inertial observer sees a straight line, while a non-inertial (rotating) observer sees a curved path. The curving path seen in the non-inertial frame is not caused by a real physical force pushing or pulling the object. It's the result of the observer's own perspective changing over time. The "fictitious force" is the mathematical tool that makes Newton's laws work for that observer.

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