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r = 2 m
t = 20 s
n = 50
ditanyakan :
T = ?
f = ?
v = ?
ω = ?
jawab :
T = t/n
T = 20/50 = 0,4s
f = n/t
f = 50/20 = 2,5 Hz
v = 2π f r
v = 2π x 2,5 x 2
v = 10 π m/s = 31,4 m/s
ω = 2π f
π = 2π x 2,5 = 5 π rad/s = 15,7 rad/s