The discussion revolves around the change in angular velocity of a planet orbiting a star without the influence of net torque. Participants explore concepts related to angular momentum, rotational inertia, and the geometric implications of distance in orbital mechanics.
The discussion is active, with participants providing insights and clarifications regarding angular momentum and its distinction from angular velocity. Some participants suggest that the original poster's understanding of torque and angular acceleration may need reconsideration, while others emphasize the importance of context in applying textbook statements.
There are references to textbook definitions and conditions under which certain physical principles apply, indicating potential misunderstandings about the applicability of these principles to non-rigid systems like orbiting bodies.
Yes, that is how I see it.uSee2 said:So essentially, we can't use ##\tau = I\alpha## for non-rigid body motion?