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 h46zwr6h/y cgr as seven sprockets at7 z:ypb1bothh -8m9 rn 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 sprocketp9b8 7 bnmyhrth1o-z: ? Why? In which gear is it harder to pedal, a small front sprocket or a large front sprocket? Why?

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