The Universal Gravitational Constant G

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The Universal Gravitational Constant G applies to all celestial bodies, not just Earth, as its "universal" designation indicates. This constant is fundamental in understanding gravitational interactions across the universe. The discussion highlights the importance of G in calculations related to planetary motion and gravitational forces. The participants confirm that the concept is straightforward and applicable to various astronomical contexts. Understanding G is essential for anyone studying physics or astronomy.
cassiek
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Does it apply to planets other than Earth? I'm just learning (cramming) this stuff; sorry if it's a dumb question.
 
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hi cassiek! :smile:

that's what "universal" means! …

it does exactly what it says on the tin! :wink:
 
haha that's what I thought, just checking! Thanks :)
 

Thread 'Axial angular momentum calculation'

Hi, I'd ask for clarification about some topics on angular momentum calculation. Consider a system of particles moving w.r.t. a given inertial frame ##\mathcal A##. Picked a point ##P## in ##\mathcal A## one defines the angular momentum vector ##\vec L## w.r.t. the reference point/pole P. Furthermore one defines the axial angular momentum ##L_a## as the component along ##a## of the system's angular momentum ##\vec L## calculated w.r.t. a pole ##P## on the axis ##a##. Such a notion is well...
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