Hi! I am new to the forums and this is my first question. I am investigating the properties of this type of chain. In order to understand it better, I need to know the physics behind a falling angled rod. I understand that the other end speeds up to conserve momentum, but I do not understand how to calculate it. The paper I read on it stated that If one lets a tilted rod fall onto a table, its other end speeds up on hitting (by 50% for a uniform rod with small θ having plastic impact: VB+ = 3V/2).I also understand that for very small angles and lengths I could assume that end B is traveling in a straight line. What would be the derivation behind the 50% increase in speed? Are there other important aspects I am missing? Does the angle affect the velocity? Thank you in advance!