gc textbook chapter 8 Rotational Motion (id: f9e3ebbfd)

[填空题]
(a) For a bicycle, how is h:slk.3d2l(.pmprd qg an /0othe avrsl; kfy 1**pldtc-1ngular speed of the rear wheel (${\omega }_R$) related to that of the pedals and front sprocket (${\omega }_F$) Fig. 8–52? That is, derive a formula for (${\omega }_R$)/(${\omega }_F$) Let $N_F$ and $N_R$ be the number of teeth on the front and rear sprockets, respectively. The teeth are spaced equally on all sprockets so that the chain meshes properly.
(b) Evaluate the ratio (${\omega }_R$)/(${\omega }_F$) when the front and rear sprockets have 52 and 13 teeth, respectively,   
(c) when they have 42 and 28 teeth.   

参考答案:
空格1: 4±2%  空格2: 1±2% 


本题详细解析: