Dua buah roda A dan B saling bersinggungan. Jika kecepatan sudut roda B = 30rad/s dan jari jari roda.... Question from @Meutiajovi

November 2018 1 33 Report

Dua buah roda A dan B saling bersinggungan. Jika kecepatan sudut roda B = 30rad/s dan jari jari roda A = 1/8 jari jari roda B, maka besar kecepatan roda A adalah...
a. 180 rad/s
b. 200 rad/s
c. 220 rad/s
d. 230 rad/s
e. 240 rad/s

dianutami3 Diketahuui :
ωB = 30 rad/s
Ra = 1/8 Rb

ditanyakan :
ωA = ?

jawab :
vA = vB
ωA ra = ωb rb
ωA 1/8rb = 30 rb
ωA = 240 rad/s

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