Conservation of angular momentum

AI Thread Summary
Conservation of angular momentum is applicable in non-stationary reference frames that are uniformly moving and not rotating. In such inertial frames, the laws of motion remain consistent. However, in rotating frames, corrections like centrifugal and Coriolis forces must be considered, making conservation of angular momentum not directly applicable. Understanding these distinctions is crucial for accurate analysis in physics. The discussion clarifies the conditions under which angular momentum conservation holds true.
makeAwish
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Hi, can i clarify sth?

Does conservation of angular momentum apply to non stationary reference frame or like moving axis of rotation?


Thanks!
 
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Hi janettaywx! :smile:
janettaywx said:
Does conservation of angular momentum apply to non stationary reference frame or like moving axis of rotation?

Newtonian mechanics obeys Newtonian relativity, which means that the laws of motion are the same in all inertial frames …

that is in all frames which are uniformly moving and not rotating.

So conservation of angular momentum does apply about an axis in a moving inertial reference frame,

but not about an axis in, for example, a rotating frame (where you have to make corrections known as centrifugal force and Coriolis force ). :smile:
 
okay. thanks a lot :)
 

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
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