ΣEK = EK(trans) + EK(rot)
= mb.v²/2 + I(s.pejal).ω²/2
= mb.ω².R²/2 + mb.R².ω²/4
= 0,75mb.4π².f².R²
= 0,75.20.4.9,85.14400.0,09/3600
= 7666,824/36 ~ 212,96 J ✓✓
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ΣEK = EK(trans) + EK(rot)
= mb.v²/2 + I(s.pejal).ω²/2
= mb.ω².R²/2 + mb.R².ω²/4
= 0,75mb.4π².f².R²
= 0,75.20.4.9,85.14400.0,09/3600
= 7666,824/36 ~ 212,96 J ✓✓