摘要
直角杠杆佯谬是指可绕角顶自由转动的直角杠杆在一个惯性系中已达力学平衡,但变换到另一惯性系中出现力矩,却仍处于平衡状态的似有矛盾的问题.本文介绍了劳厄的能流解释,并将其与弹性定律的协变性解释统一起来.
Angled lever paradox(Lewis and Tolman 1909)is a seeming inconsistency-question.The angled lever is already being in mechanics-static-equilibrium in the proper inertial system which can freely rotates round its corner but it bears a turning moment to be maintain the equilibrium state with uniform velocity from the viewpoints of other inertial(laboratory)system.Laue's energy-current interpretation is introduced and this is unified with the interpretation of covariance of elasticity law.
出处
《大学物理》
北大核心
2004年第5期12-15,共4页
College Physics
基金
河北大学新世纪教育教学改革工程项目(ZB2-7)
关键词
直角杠杆佯谬
劲度矩阵
弹性定律
相对论力学
angled-lever paradox
stiffness matrix
elasticity law
relativistic mechanics
