Angular momentum of a half filled waterbottle....

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SUMMARY

The discussion centers on the angular momentum of a half-filled water bottle when it is set into rotation. Key points include the necessity of specifying the axis of rotation, as angular momentum is dependent on both the mass distribution and the rotational axis. The conversation emphasizes that without clear details regarding the axis and the initial conditions, one cannot accurately determine whether the angular momentum will increase, decrease, or remain constant. The importance of precise terminology in physics discussions is highlighted, particularly regarding the definition of an axis.

PREREQUISITES
  • Understanding of angular momentum concepts
  • Familiarity with rotational dynamics
  • Knowledge of mass distribution in physical objects
  • Basic principles of physics related to motion
NEXT STEPS
  • Research the mathematical formulation of angular momentum
  • Explore the effects of mass distribution on rotational motion
  • Learn about different axes of rotation and their implications
  • Study examples of angular momentum in real-world applications
USEFUL FOR

Physics students, educators, and anyone interested in understanding the principles of rotational dynamics and angular momentum in physical systems.

Prashan Shan
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Will the angular momentum of a half filled waterbottle increase? or decrease? or remain the same?
 
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As compared to what?
 
nasu said:
As compared to what?
when compared to the angular momentum of the bottle at instant when it started spinning.
 
Spinning around what axis?
 
nasu said:
Spinning around what axis?
about its center.
 
The center is not an axis. The axis is a line. It may go through the center. But there are many lines going through a point.
Look, you need all the details of a question before you can even think about an answer. You cannot expect people to read your mind and figure out by themselves what you want to ask.
 

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