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 sr9 .v,6 v5nf f dv/revvsv5dy-even sprockets at the rear wheel an3quu7 rge*- w (l-pgvzd three at the pedal cranks. In which gear is it harder to pedal,q r-gg 3u*p7wz ve(l-u a small rear sprocket or a large 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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