gc textbook chapter 8 Rotational Motion (id: f1a5b03e2)

[问答题]
A 21-speed bicycle has seven sprockets at the rear (z k5kjkb25 ejwheel and three at the pedal j (k52j5z ekbkdgo5zztg,2 9 ncranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why? In which gearo59z, zgdg2t n is it harder to pedal, a small front sprocket or a large front sprocket? Why?

参考答案:



本题详细解析: 暂无