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ω=2π/T
ω=0,312 1/s
V=ωr
V=6,24m/s
2)
ω=0,624 1/s
V=1,248 m/s
r=20m
T=20 s
π≈ 22/7
V=(2*22/7*20m) / 20s = 44/7 m/s ≈ 6,29
2. V= 2πr/ T
r=2m
T=10 s
π≈ 22/7
V= (2*22/7 * 2m) / 10s = (88/7m) /10s = 44/35 m/s ≈ 1,25 m/s