Understanding Uniform Circular Motion on a Rotating Merry-go-round

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SUMMARY

The discussion centers on understanding uniform circular motion as observed from both an external and internal perspective on a rotating merry-go-round. An external observer sees a weight hanging at an angle due to the centripetal force acting on it, while the observer on the merry-go-round perceives the weight as hanging vertically due to their frame of reference. Key concepts include free body diagrams and the relevant equations governing uniform circular motion, which are essential for analyzing the forces at play.

PREREQUISITES
  • Understanding of uniform circular motion principles
  • Ability to create and interpret free body diagrams
  • Familiarity with centripetal force and tension in strings
  • Knowledge of relevant equations for circular motion, such as F = ma and centripetal acceleration
NEXT STEPS
  • Study free body diagrams in the context of circular motion
  • Learn the equations governing uniform circular motion, including centripetal acceleration formulas
  • Explore the concept of reference frames in physics
  • Examine practical examples of circular motion in real-world scenarios
USEFUL FOR

Students studying physics, educators teaching circular motion concepts, and anyone interested in understanding the dynamics of rotating systems.

byyao
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i got it already, thanks.
 
Last edited:
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byyao said:
On a rotating merry-go-round a weight is hanging from a string,
As seen from the outside it hangs at an angle to the vertical.
How does the outside observer explain that?
The observer on merry-go-round does not see the outside world. How does he (or she) explain the angle?

I don't really get this one...need help please~

What don't you get? Show us a free body diagram for the weight and string. List the relevant equations for uniform circular motion. There's a reason that the Homework Help Template (that you deleted when posting) asks for the Relevant Equations and your Attempt at a Solution.
 

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