均质柱形刚体转动惯量的计算

The calculation on rotary inertia for homogeneous cylindrical rigid body

从刚体转动惯量的定义出发,结合刚体的平行轴定理和"补偿法",通过选取不同的"微元",计算了不同情形的均质柱形刚体的转动惯量,并强调了物理"微元法"的思想,强化了物理概念、定理的运用,而且将结论进行推广讨论.

Starting from the definition of rotary inertia of rigid body, combined with the parallel-axis theorem of rigid body and the compensation method, by choosing different infinitesimal element, the rotary inertia of homogeneous cylindrical rigid body is caculated under the different situation. Not only the infinitesimal method physical idea is emphasized, and using of physical concept and physical theorem is intensified, but also the promote discussion about eaculation result is proceeded.