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R = 5 cm = 0,05 m
f = 25 Hz
t = 2 s
Ditanya: s......?
jawab:
ω = 2πf
ω = 2 x 3,14 x 25
ω = 157 rad/s
v = ω R
v = 157 x 0,05
v = 7,85 m/s
maka:
s = v t
s = 7,85 x 2
s = 15,7 m
jarak yg ditempuh adlh 15,7 m