Prosím o pomoc pri vyriešení príkladov:
1. Aká veľká vztlaková sila pôsobí na teleso zo železa, ktoré je z polovice ponorené do slanej vody? Objem telesa je 20 litrov.
2.Na závažie ponorené do vody pôsobí vztlaková sila Fvz = 400N. Hustota vody je 1000 kg/m3. Vypočítajte objem závažia.
3.Teleso z duralu s objemom 200 cm3 sa vo vode celé ponorilo. Vypočítajte vztlakovú silu pôsobiacu na teleso. Hustota vody je 1000 kg/m3, hustota duralu je 2800 kg/m3.
ďakujem za pomoc :-)
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