Coefficient of restitution in rotation motion

AI Thread Summary
The discussion revolves around a physics problem involving a ball colliding with a rod, where the coefficient of restitution (COR) is 0.5. Participants explore how to apply the COR in this scenario, noting that a COR of 1 would allow for conservation of kinetic energy, but with a COR of 0.5, energy is not conserved. The formula for COR, which relates the final and initial velocities of the colliding objects, is highlighted as a key tool for solving the problem. The conversation emphasizes the need to understand the implications of a non-elastic collision on the system's energy and momentum. Overall, the discussion focuses on the application of the COR in rotational motion and collision analysis.
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Homework Statement


Suppose A ball of mass m moving with a speed v collides with a rod of mass M and length L placed horizontally on a smooth floor. The coefficient of restitution is 0.5.



Homework Equations





The Attempt at a Solution



In this case how do we utilise the information of COR.

If it were given COR is 1 then we could conserve kinetic energy. But in this case how do we how about it?
 
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Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
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