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Homogénna kruhová doska hmotnosti 2 kg s polomerom 10 cm kýva ako fyzikálne kyvadlo okolo vodorovnej osi kolmej na rovinu dosky a prechádzajúcou jej obvodom. Vypočítajte dobu kmitu. Moment zotrvačnosti kruhovej dosky vzhľadom na vodorovnú os kolmú na rovinu dosky a prechádzajúcu jej stredom je 𝐼 = (𝑚R2 )/2.
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