The discussion revolves around the application of angular momentum formulas, specifically L = r x p and L = I ω, in the context of a rotating wheel in contact with the ground. Participants are exploring the conditions under which these formulas can be applied.
The discussion is ongoing, with participants providing insights into the conditions for using different angular momentum formulas. Some guidance has been offered regarding the relationship between rotation and linear motion, but no consensus has been reached on the specific application in this scenario.
There is a mention of the wheel's rotation about the instantaneous contact point and the relevance of the parallel axis theorem, indicating that assumptions about the motion and forces acting on the wheel are being examined.
If the wheel were sliding without friction along the road then that would be true. Then the wheel could be modeled as a point mass M moving past the point of interest at a perpendicular distance R.Warlic said:
I see, thank you. So if the object is not rotating, I can use L=MRV, where R is the distance to the center of mass of the object?gneill said:
Yes. Then it's just a non-rotating rigid body undergoing linear motion.Warlic said:
