Centripetal or centrifugal? The Physics of Water Escape in a Washing Machine

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Homework Help Overview

The discussion revolves around understanding the physics behind why water escapes from a washing machine during the spin cycle. The original poster presents multiple-choice options regarding the forces at play, specifically questioning the roles of centripetal and centrifugal forces.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants explore the definitions and implications of centripetal versus centrifugal forces, with some expressing uncertainty about the correct answer. Others question the mechanics of water flow in relation to the washing machine's design.

Discussion Status

The discussion includes various interpretations of the problem, with some participants suggesting different answers based on their reasoning. There is no explicit consensus, but multiple viewpoints are being explored, indicating a productive exchange of ideas.

Contextual Notes

Participants reference the terminology used in physics, particularly the term 'centrifugal force,' and its acceptance in academic discussions. The context of the washing machine's operation and the mechanics of water flow are central to the conversation.

laurenbaboran
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Homework Statement



13. Why does the water in a washing machine escape through the little holes during the spin cycle?
a The water is flung out of the clothes by the centripetal force.
b The water is flung out of the washer by the centrifugal force.
c The water is sucked out of the little holes by the washer.
d The washer cannot force the water into a circle because of the holes.



Homework Equations



I believe it's either a or b.

The Attempt at a Solution


I can't narrow it down between the tow. Help is very appreciated!
 
Physics news on Phys.org
nvm I got it!
 
BTW don't let anyone tell you that the term 'centrifugal force' is wrong. Richard Feynman used it in his (recently posted) lecture series, and he kind of knew his physics. :smile:
 
Shouldn't the answer be "d"? If the outer tub is draining, then the holes on the inner tub above the outer tub water line can't produce a centripetal force on the water, and the water's momentum causes it to flow through the holes into the outer tub.
 
rcgldr said:
Shouldn't the answer be "d"? If the outer tub is draining, then the holes on the inner tub above the outer tub water line can't produce a centripetal force on the water, and the water's momentum causes it to flow through the holes into the outer tub.

That's my vote too, for what it's worth.
 

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