Centripedal & Centrifugal force

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Discussion Overview

The discussion revolves around the differences between centripetal and centrifugal forces, focusing on their definitions, contexts of use, and the implications of different reference frames (inertial vs. non-inertial). Participants explore whether one is a "true" force and the other a "fictitious" force.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant asks about the difference between centripetal and centrifugal forces, suggesting that one is in inertial frames and the other in rotating frames.
  • Another participant corrects the spelling of "centripedal" to "centripetal" and argues that changing reference frames introduces effects like centrifugal and Coriolis forces, asserting that there are no "fictitious forces" since any nonzero acceleration implies a nonzero force.
  • A different participant states that centripetal force is a "real" force requiring an agent, while centrifugal force is described as "fictitious" or "inertial," arising from the perspective of a non-inertial frame, though its effects are real.
  • One participant agrees that centrifugal and Coriolis forces are classified as fictitious forces.

Areas of Agreement / Disagreement

Participants express differing views on the classification of forces as "real" or "fictitious," with some supporting the notion of fictitious forces and others rejecting it. The discussion remains unresolved regarding the definitions and implications of these forces.

Contextual Notes

There are unresolved assumptions about the definitions of "real" and "fictitious" forces, as well as the implications of different reference frames on the understanding of these forces.

madking153
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hi,
what is difference between Centripedal & Centrifugal ? One is in inertial frames and the other in rotating frames? one is 'true' force and the other is fictitious force?

thanks
 
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1.It's "centripetal", not "centripedal".

2. Changing reference frames from inertial to noninertial frames usually involves the appearance of effects such as centrifugal forces, Coriolis forces.

There are no such things as "fictitious forces". Any nonzero acceleration is a frame of reference means a nonzero force is present.

Daniel.
 
When viewing circular motion from an inertial frame, one finds a centripetal force producing the acceleration. Centripetal force is a "real" force, since it requires a real agent (something that exerts the force).

Viewed from the rotating non-inertial frame, Newton's laws must be modified by the additional of "fictious" (better called "inertial") forces like centrifugal force. Centrifugal force is "fictitious" in the sense that it is entirely due to viewing things from a noninertial frame; there is no agent exerting the centrifugal force. But the effect is very real.
 
yes, centrifugal forces and coriolis forces are called Fictitious force..
 

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