How Do Key Swings Maintain a Circular Path?

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Homework Help Overview

The discussion revolves around a physics problem involving circular motion, specifically focusing on the dynamics of keys swung in a vertical circle. The original poster presents two questions regarding the minimum speed required to maintain the circular path and the tension in the string at the lowest point of the swing.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants are encouraged to share their initial thoughts and approaches, with one expressing uncertainty about how to begin tackling the problem. Another suggests reviewing relevant equations that may apply to the scenario.

Discussion Status

The discussion is in an early stage, with participants seeking clarification on how to approach the problem. Some guidance has been offered regarding the importance of identifying relevant equations, but no consensus or specific methods have been established yet.

Contextual Notes

There appears to be a need for foundational understanding of the principles of circular motion, as participants are encouraged to refer back to their textbooks or lecture notes for assistance.

farhannaeem
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Keys with a combined mass of 0.100 kg are attached to a 0.25m long string and swung in a circle in the vertical plane.
a) What is the slowest speed that the keys can swing and still maintain a circular path?
b) What is the tension in the string at the bottom of the circle?
 
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Show what you have done and where you are stuck.
 
i don't know how to approach it like how to start the problem
 
start by writing out all the equations you know that might help :smile:

(if you don't know any, go back to your book or your lecture notes and find some)
 

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