gc textbook chapter 8 Rotational Motion (id: f1a5b03e2)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[问答题]
A 21-speed bicycle has seven sproodd4te8s.0s sgm-vdmjoev,l7k28a k9 3 h*po ckets at the rear wheel and three at the pedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprocket? Why? In which gear is it harder to pedal, a small fro2j7ok,evg vk9 do-m m3plha8 *nt sprocket or a large front sprocket? Why?

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