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r = 30 cm = 0,3 m
t = 3 min = 180 s
n = 1800
szukane:
v = ?
w(omega) = ?
v = 2TTr/T
T = t/n = 180s/1800 = 0,1 s
v = 2 * 3,14 * 0,3m/0,1s
v = 18,84 m/s
w = 2TT/T
w = 2 * 3,14/0,1s
w = 62,8 rad/s