Abstract: To address the limitations of existing angular momentum conservation experimental apparatuses，
such as single-functionality and limited precision，a novel device integrating two modes-" falling-disk mode"
and " slider self-driven mode"-has been developed．The former demonstrates the incorporation process of an
external object system，while the latter illustrates the redistribution of internal mass，thereby enabling
quantitative verification of angular momentum conservation．The extrapolation method is employed to calculate
the angular velocity at the instant of abrupt change in the moment of inertia．Experimental results show that the
relative errors of both modes are less than 5%，confirming the conservation of angular momentum under
conditions of external mass addition and internal mass redistribution． This apparatus combines both
demonstration and measurement functions，providing a comprehensive practical platform for university physics
laboratory teaching．
阳安琪, 段知航, 何紫宣, 陈光伟, 阳 媚, 刘 储, 何 军 . 一种新型角动量守恒实验装置的设计与研究#br#[J]. 大学物理实验, 2026, 39(5): 78-81.
YANG Anqi, DUAN Zhihang, HE Zixuan, CHEN Guangwei, YANG Mei, LIU Chu, HE Jun. Design and Investigation of a Novel Experimental Apparatus for Angular Momentum Conservation#br#. Physical Experiment of College, 2026, 39(5): 78-81.
