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 sprocketpf+l98jt:vr3 : :e,cyub ecg ws at the rear wheel and three at the pt7;csn m3 j;035dw dvowwvzr381y ssmedal cranks. In which gear is it harder to pedal, a small rear sprocket or a large rear sprw8 sv37n sd;do w;5svtrz0 ym133cmj wocket? Why? In which gear is it harder to pedal, a small front sprocket or a large front sprocket? Why?

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