Positive SSL
1 如圖所示之周轉輪系,齒輪A與B的齒數分別為80齒及40齒,若齒輪A的轉速為順時針方向60 rpm,且旋轉臂C的轉速為逆時針方向30 rpm,則齒輪B的轉向及轉速為多少?
A 順時針方向150 rpm
B 順時針方向210 rpm
C 逆時針方向150 rpm
D 逆時針方向210 rpm

e = NB-NCNA-NC = - TATB

NB-(-30)60-(-30) =-8040

NB=-210 rpm

=210 rpm 逆時計