Is Angular Momentum of z and Energy Conserved?

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Homework Help Overview

The discussion revolves around the conservation of angular momentum and energy in a system described by a specific potential function. Participants are exploring the conditions under which these quantities are conserved, particularly focusing on the z component of angular momentum.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are examining the conservation of angular momentum in different components and questioning the conditions under which energy is also conserved. There is a reference to Lagrangian mechanics and Noether's Theorem as a potential method for identifying conserved quantities.

Discussion Status

Some participants affirm the conservation of the z component of angular momentum and energy, while others seek further clarification on additional conserved quantities. There is an acknowledgment of varying familiarity with the underlying mechanics, which may influence the discussion.

Contextual Notes

One participant indicates a lack of familiarity with Lagrangian mechanics, suggesting a potential gap in understanding the broader implications of the discussion. There is also a mention of a specific condition (k = 1) that may affect the conservation of angular momentum in the x and y components.

madking153
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hi,

if i have mass possesses potential U(x)=-Gm1m2/(x^2+y^2+(kz)^2 )^1/2 , i said angular momentum of z is conserved but not angular momentum of x , y .. is it correct ?

what else is conserved ? energy ?
 
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Yes, the z component of angular momentum is conserved, but the other two are not unless k = 1. As for other conserved quantities, what do you think? You have a potential ...
 
My thought : angular momentum of z component and the energy of the system is conserved ... Pls tell me if there are more quantities are conserved
thanks
 
Last edited:
no i am not familiar to Langrage mechanics - will learn next 2 months
 
So i am correct ?? angular momentum of z and energy are conserved ?
 

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