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r=1,2m
V=2[pi]r/T
V=2×3,14×1,2m/4s
V≈1,88m/s
r=1,2m
V=2π r/T
V=2×3,14×1,2m/4s
V≈1,88m/s
R = 12 dm = 1,2 m
T = 4 s
v = ? [m/s]
v = ω*R
ω = 2π/T
v = 2πR/T
[v] = [m/s]
v = 2π*(1,2 m)/(4 s)
v = 2,4π/4 m/s
v = 1,9 m/s
Odp: Prędkość liniowa wynosi 1,9 m/s.