41 lines
553 B
Plaintext
41 lines
553 B
Plaintext
Rovnomerny pohyb po krznici
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periodicky pohyb
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T perioda (doba oběhu)
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[T] = s
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f frekvence
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[f] = Hz
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f = 1/T
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rychlost
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→
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v ma velikost a smer
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v = const
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s = r * f
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Φ merime v radianech rad 1 rad: delka
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1 rad = 57°18'
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uhova rychlost
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→
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ω
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ω = ΔΦ/Δt
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[ω] = rad/s
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ω = 2pi/T = 2pi*f
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v = s/t = pi*Φ/t
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v = pi*ω
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hmotny bod kona rovnomerny pohib po kruznici o polomeru 0,5m s frekvenci 4Hz
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vypocitejte: obeznou dobu
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0.25s
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uhlovou rychlost
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25.133 rad/s
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rychlost
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f*T = 1
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T = 1/f
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T = 0.25s
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