Виштовхувальна сила. Закон Архімеда.
https://www.youtube.com/watch?v=d6_AusmWYnA
https://www.youtube.com/watch?v=pjPp3iLPo7g
https://www.youtube.com/watch?v=wkm50QOshGM
Умови плавання тіл.
https://www.youtube.com/watch?v=Zk4S9_PMw0w
https://www.youtube.com/watch?v=p5A1MpQff2U
https://www.youtube.com/watch?v=AX313AycbQ8