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r = 80 cm = 0,8 m
ω = 30 rpm
Ditanyakn : V ?
Dijawab :
ω = 30 rpm = 30x2π/60 rad/s = 1π rad/s
Jadi Kecepatan Linear :
V = ωR
= 1π x 0,8
= 2,512 m/s