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1 一組帶輪傳動機構,A輪直徑為15cm,B輪直徑為35cm,若A輪為主動輪,其轉速為200rpm,假設皮帶厚度可忽略且無滑動現象,則B輪之轉速為多少rpm?
A 85.7rpm
B 94.1rpm
C 97.3rpm
D 101.4rpm

NA/NB = DB/DA

200/NB=35/15

NB=85.7rpm