• 2021-04-14
    中国大学MOOC: 一质量均匀分布的圆环,质量为http://edu-image.nosdn.127.net/_PhotoUploadUtils_5b785b2c-f419-457d-9b93-774d646a613b.png,半径为http://edu-image.nosdn.127.net/_PhotoUploadUtils_d359f1c1-7a58-4f87-a1ce-3c56d1d7f90b.png,绕与圆面垂直,过一条半径的中点处的轴转动,其转动惯量为       http://edu-image.nosdn.127.net/_PhotoUploadUtils_49399677-af71-4db8-a3d0-4510dc60faa2.png.