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 hg 0lkhgw :evp :,dj9 -jgwy)8(z he3jaas se+ pmj k rtwpe+8.jfu--ven 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 largutejp8+-fj+. p-wm kre rear sprocket? Why? In which gear is it harder to pedal, a small front sprocket or a large front sprocket? Why?

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