Circular Motion,Uniform motion in Vertical Circles

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SUMMARY

The discussion focuses on the concepts of circular motion and uniform motion in vertical circles, specifically addressing the direction of centripetal force at different points in the circle. It is established that when an object is at the top of the circle, the centripetal force is directed downward and considered negative, while at the bottom, it is directed upward and considered positive. The conversation emphasizes the importance of a consistent sign convention in physics, which allows for flexibility in defining positive and negative directions based on the chosen coordinate system.

PREREQUISITES
  • Understanding of circular motion dynamics
  • Familiarity with centripetal force concepts
  • Knowledge of coordinate systems in physics
  • Basic grasp of sign conventions in physics
NEXT STEPS
  • Research the principles of centripetal acceleration in circular motion
  • Study different coordinate systems and their applications in physics
  • Explore the implications of sign conventions in various physics problems
  • Learn about uniform circular motion and its characteristics
USEFUL FOR

Students studying physics, educators teaching circular motion concepts, and anyone interested in understanding the dynamics of objects in vertical circular paths.

Lydia22
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Homework Statement



If the object is at the top, the centripetal force (pointing as
always towards the centre) is down and negative.
● If the object is at the bottom, the centripetal force is pointing up and positive

The Attempt at a Solution


I thought any force towards the center is always positive.Am i wrong?
 
Physics news on Phys.org
Depends on your coordinate system?
 
It's called a sign convention. You may choose it to be whatever you wish but you must be consistent within each problem.
 

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