浮体の安定性

下向きにz軸をとっている

$ (a>0\land h>0)\lor a<0

https://kakeru.app/b6f2b5196dc5611a5575aabba801438f https://i.kakeru.app/b6f2b5196dc5611a5575aabba801438f.svg

$ a>0\land h>0

偶力が姿勢を復元する方向に働く

https://kakeru.app/cc875b9ff6cb217201233f9805138105 https://i.kakeru.app/cc875b9ff6cb217201233f9805138105.svg

$ a>0>h

https://kakeru.app/f7c9677166440780af67449dff712a90 https://i.kakeru.app/f7c9677166440780af67449dff712a90.svg

偶力が浮体を傾ける方向に働く

$ h=0

https://kakeru.app/a9d973d9f8609849de4259a0d8ac3b29 https://i.kakeru.app/a9d973d9f8609849de4259a0d8ac3b29.svg

References