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 sq adk31fub5 /;goi-wued4- v5jvcw.g ;+okseun(e3r w1y3ejx99-; sxirhqceven sprockets 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 sma ncsx j39eh1e3rr u qi-xy(;9wll front sprocket or a large front sprocket? Why?

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