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r = 1/2 d = 0,5 m
jarak titik pinggir roda = r = 0,5 m
kelajuan sudut (w : omega) = 30 RPM
kelajuan sudut (w : omega) = 30 rotasi per menit
kelajuan sudut (w : omega) = 30 x (2π/60) rad/s
kelajuan sudut (w : omega) = π rad/s
kelajuan linier (v) = kelajuan sudut x jarak ke titik
kelajuan linier (v) = π x 0,5
kelajuan linier (v) = 0,5π m/s
r= 1/2.d= 1/2.100= 50 cm =0,5 m
ω=30 Rpm=30.π/30=π rad/s
dit: V=..?
Jawab:
V=ω.r
V=π.0,5
V= 0,5π m/s