Physics - Spinning a bucket of water in a vertical circle

AI Thread Summary
The discussion centers on the physics concepts relevant to spinning a bucket of water in a vertical circle, specifically focusing on centripetal force. It emphasizes that while centripetal force is essential for maintaining circular motion, centrifugal force is not typically used in this analysis. The conversation also touches on the importance of vertical forces, suggesting that conservation laws may play a role in understanding the dynamics involved. Participants encourage research and observation of practical examples to gain deeper insights. Overall, the analysis of spinning a bucket of water involves understanding how centripetal force prevents spillage while considering other forces at play.
candypie90
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Homework Statement
What are the two physics ideas of spinning a bucket of water in a vertical circle? would it be centripetal and centrifugal force?
Relevant Equations
F = mac = (mv2 / r)
F = mac = (mv2 / r)
 
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candypie90 said:
Homework Statement: What are the two physics ideas of spinning a bucket of water in a vertical circle? would it be centripetal and centrifugal force?
Homework Equations: F = mac = (mv2 / r)

F = mac = (mv2 / r)
The question is rather vague. You would not use both concepts to analyse it, you wouid use one or the other. Please quote the question word for word as given to you.
 
haruspex said:
The question is rather vague. You would not use both concepts to analyse it, you wouid use one or the other. Please quote the question word for word as given to you.

Oh sorry, the exact question word for word is: What are two or more physics ideas which are relevant to spinning a bucket of water in a vertical circle?

Thank you.
 
candypie90 said:
Oh sorry, the exact question word for word is: What are two or more physics ideas which are relevant to spinning a bucket of water in a vertical circle?

Thank you.
Ok.
Certainly centripetal force. I would not mention centrifugal for the reason I gave.
Vertical implies a certain other force should be relevant, but not sure that it is an 'idea' in this sense.
Might be able to work a conservation law into it.
So far, it could be an empty bucket. How can you bring the water into it?
 
haruspex said:
Vertical implies a certain other force should be relevant, but not sure that it is an 'idea' in this sense.
I would think that an idea would be what relates this other vertical force to the centripetal force so that the water can go around the circle without spilling.
 
Don't guess. Do some internet research. Watch videos of buckets spinning in vertical circles. They come with explanations that should give you some ideas.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
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