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 sprockets at thew 4pf+4ng53hh* spqik rear wheel and three at im/zs48gxvir u9; i4 qmf:. jathe 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 pem 4va48xz/i.sjq9igf m; iru :dal, a small front sprocket or a large front sprocket? Why?

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